Home / 8,639.11-11,932.98-6,610.16

Finding the Fourth Proportional to 8,639.11, 11,932.98 and 6,610.16

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Solution

The fourth proportional to 8,639.11, 11,932.98 and 6,610.16 is: 9,130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.11 : 11,932.98 = 6,610.16 : x
  2. Step 2: Convert to fraction form
    8,639.11/11,932.98 = 6,610.16/x
  3. Step 3: Cross multiply
    8,639.11x = 11,932.98 × 6,610.16
  4. Step 4: Simplify right side
    8,639.11x = 78,878,912.12
  5. Step 5: Solve for x
    x = 78,878,912.12/8,639.11
  6. Step 6: Final answer
    x = 9,130.44

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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.