Home / 5,411.17-8,116.80-1,515.70

Finding the Fourth Proportional to 5,411.17, 8,116.80 and 1,515.70

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Solution

The fourth proportional to 5,411.17, 8,116.80 and 1,515.70 is: 2,273.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.17 : 8,116.80 = 1,515.70 : x
  2. Step 2: Convert to fraction form
    5,411.17/8,116.80 = 1,515.70/x
  3. Step 3: Cross multiply
    5,411.17x = 8,116.80 × 1,515.70
  4. Step 4: Simplify right side
    5,411.17x = 12,302,633.76
  5. Step 5: Solve for x
    x = 12,302,633.76/5,411.17
  6. Step 6: Final answer
    x = 2,273.56

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Double scale
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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.