Home / 5,129.07-7,688.24-2,905.13

Finding the Fourth Proportional to 5,129.07, 7,688.24 and 2,905.13

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Solution

The fourth proportional to 5,129.07, 7,688.24 and 2,905.13 is: 4,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.07 : 7,688.24 = 2,905.13 : x
  2. Step 2: Convert to fraction form
    5,129.07/7,688.24 = 2,905.13/x
  3. Step 3: Cross multiply
    5,129.07x = 7,688.24 × 2,905.13
  4. Step 4: Simplify right side
    5,129.07x = 22,335,283.70
  5. Step 5: Solve for x
    x = 22,335,283.70/5,129.07
  6. Step 6: Final answer
    x = 4,354.65

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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.