Home / 8,758.35-12,088.08-5,221.78

Finding the Fourth Proportional to 8,758.35, 12,088.08 and 5,221.78

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Solution

The fourth proportional to 8,758.35, 12,088.08 and 5,221.78 is: 7,206.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.35 : 12,088.08 = 5,221.78 : x
  2. Step 2: Convert to fraction form
    8,758.35/12,088.08 = 5,221.78/x
  3. Step 3: Cross multiply
    8,758.35x = 12,088.08 × 5,221.78
  4. Step 4: Simplify right side
    8,758.35x = 63,121,294.38
  5. Step 5: Solve for x
    x = 63,121,294.38/8,758.35
  6. Step 6: Final answer
    x = 7,206.98

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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.