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Finding the Fourth Proportional to 1,461.35, 2,194.05 and 915.68

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Solution

The fourth proportional to 1,461.35, 2,194.05 and 915.68 is: 1,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.35 : 2,194.05 = 915.68 : x
  2. Step 2: Convert to fraction form
    1,461.35/2,194.05 = 915.68/x
  3. Step 3: Cross multiply
    1,461.35x = 2,194.05 × 915.68
  4. Step 4: Simplify right side
    1,461.35x = 2,009,047.70
  5. Step 5: Solve for x
    x = 2,009,047.70/1,461.35
  6. Step 6: Final answer
    x = 1,374.79

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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.