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Finding the Fourth Proportional to 1,874.13, 2,810.71 and 557.53

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Solution

The fourth proportional to 1,874.13, 2,810.71 and 557.53 is: 836.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.13 : 2,810.71 = 557.53 : x
  2. Step 2: Convert to fraction form
    1,874.13/2,810.71 = 557.53/x
  3. Step 3: Cross multiply
    1,874.13x = 2,810.71 × 557.53
  4. Step 4: Simplify right side
    1,874.13x = 1,567,055.15
  5. Step 5: Solve for x
    x = 1,567,055.15/1,874.13
  6. Step 6: Final answer
    x = 836.15

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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.