Home / 9,320.96-12,862.92-5,129.18

Finding the Fourth Proportional to 9,320.96, 12,862.92 and 5,129.18

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Solution

The fourth proportional to 9,320.96, 12,862.92 and 5,129.18 is: 7,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.96 : 12,862.92 = 5,129.18 : x
  2. Step 2: Convert to fraction form
    9,320.96/12,862.92 = 5,129.18/x
  3. Step 3: Cross multiply
    9,320.96x = 12,862.92 × 5,129.18
  4. Step 4: Simplify right side
    9,320.96x = 65,976,232.01
  5. Step 5: Solve for x
    x = 65,976,232.01/9,320.96
  6. Step 6: Final answer
    x = 7,078.27

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1.5x scale

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.