Home / 9,639.12-13,301.64-5,660.13

Finding the Fourth Proportional to 9,639.12, 13,301.64 and 5,660.13

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Solution

The fourth proportional to 9,639.12, 13,301.64 and 5,660.13 is: 7,810.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.12 : 13,301.64 = 5,660.13 : x
  2. Step 2: Convert to fraction form
    9,639.12/13,301.64 = 5,660.13/x
  3. Step 3: Cross multiply
    9,639.12x = 13,301.64 × 5,660.13
  4. Step 4: Simplify right side
    9,639.12x = 75,289,011.61
  5. Step 5: Solve for x
    x = 75,289,011.61/9,639.12
  6. Step 6: Final answer
    x = 7,810.78

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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.