Home / 8,753.35-12,081.80-5,215.88

Finding the Fourth Proportional to 8,753.35, 12,081.80 and 5,215.88

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Solution

The fourth proportional to 8,753.35, 12,081.80 and 5,215.88 is: 7,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.35 : 12,081.80 = 5,215.88 : x
  2. Step 2: Convert to fraction form
    8,753.35/12,081.80 = 5,215.88/x
  3. Step 3: Cross multiply
    8,753.35x = 12,081.80 × 5,215.88
  4. Step 4: Simplify right side
    8,753.35x = 63,017,171.61
  5. Step 5: Solve for x
    x = 63,017,171.61/8,753.35
  6. Step 6: Final answer
    x = 7,199.21

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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.