Home / 7,513.38-11,271.10-3,129.81

Finding the Fourth Proportional to 7,513.38, 11,271.10 and 3,129.81

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Solution

The fourth proportional to 7,513.38, 11,271.10 and 3,129.81 is: 4,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,513.38 : 11,271.10 = 3,129.81 : x
  2. Step 2: Convert to fraction form
    7,513.38/11,271.10 = 3,129.81/x
  3. Step 3: Cross multiply
    7,513.38x = 11,271.10 × 3,129.81
  4. Step 4: Simplify right side
    7,513.38x = 35,276,417.93
  5. Step 5: Solve for x
    x = 35,276,417.93/7,513.38
  6. Step 6: Final answer
    x = 4,695.15

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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.