Home / 8,868.61-12,239.54-5,331.75

Finding the Fourth Proportional to 8,868.61, 12,239.54 and 5,331.75

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Solution

The fourth proportional to 8,868.61, 12,239.54 and 5,331.75 is: 7,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.61 : 12,239.54 = 5,331.75 : x
  2. Step 2: Convert to fraction form
    8,868.61/12,239.54 = 5,331.75/x
  3. Step 3: Cross multiply
    8,868.61x = 12,239.54 × 5,331.75
  4. Step 4: Simplify right side
    8,868.61x = 65,258,167.40
  5. Step 5: Solve for x
    x = 65,258,167.40/8,868.61
  6. Step 6: Final answer
    x = 7,358.33

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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.