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Finding the Fourth Proportional to 1,505.39, 2,077.61 and 876.11

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Solution

The fourth proportional to 1,505.39, 2,077.61 and 876.11 is: 1,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.39 : 2,077.61 = 876.11 : x
  2. Step 2: Convert to fraction form
    1,505.39/2,077.61 = 876.11/x
  3. Step 3: Cross multiply
    1,505.39x = 2,077.61 × 876.11
  4. Step 4: Simplify right side
    1,505.39x = 1,820,200.13
  5. Step 5: Solve for x
    x = 1,820,200.13/1,505.39
  6. Step 6: Final answer
    x = 1,209.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.