Home / 9,885.12-13,641.36-5,694.24

Finding the Fourth Proportional to 9,885.12, 13,641.36 and 5,694.24

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Solution

The fourth proportional to 9,885.12, 13,641.36 and 5,694.24 is: 7,857.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.12 : 13,641.36 = 5,694.24 : x
  2. Step 2: Convert to fraction form
    9,885.12/13,641.36 = 5,694.24/x
  3. Step 3: Cross multiply
    9,885.12x = 13,641.36 × 5,694.24
  4. Step 4: Simplify right side
    9,885.12x = 77,677,177.77
  5. Step 5: Solve for x
    x = 77,677,177.77/9,885.12
  6. Step 6: Final answer
    x = 7,857.99

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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.