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Finding the Fourth Proportional to 2,863.88, 4,296.06 and 916.12

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Solution

The fourth proportional to 2,863.88, 4,296.06 and 916.12 is: 1,374.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.88 : 4,296.06 = 916.12 : x
  2. Step 2: Convert to fraction form
    2,863.88/4,296.06 = 916.12/x
  3. Step 3: Cross multiply
    2,863.88x = 4,296.06 × 916.12
  4. Step 4: Simplify right side
    2,863.88x = 3,935,706.49
  5. Step 5: Solve for x
    x = 3,935,706.49/2,863.88
  6. Step 6: Final answer
    x = 1,374.26

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,864.88, 4,297.56 and 917.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.