Home / 8,624.88-11,902.40-5,638.92

Finding the Fourth Proportional to 8,624.88, 11,902.40 and 5,638.92

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Solution

The fourth proportional to 8,624.88, 11,902.40 and 5,638.92 is: 7,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.88 : 11,902.40 = 5,638.92 : x
  2. Step 2: Convert to fraction form
    8,624.88/11,902.40 = 5,638.92/x
  3. Step 3: Cross multiply
    8,624.88x = 11,902.40 × 5,638.92
  4. Step 4: Simplify right side
    8,624.88x = 67,116,681.41
  5. Step 5: Solve for x
    x = 67,116,681.41/8,624.88
  6. Step 6: Final answer
    x = 7,781.75

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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.