Home / 8,753.64-12,081.40-5,218.90

Finding the Fourth Proportional to 8,753.64, 12,081.40 and 5,218.90

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Solution

The fourth proportional to 8,753.64, 12,081.40 and 5,218.90 is: 7,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.64 : 12,081.40 = 5,218.90 : x
  2. Step 2: Convert to fraction form
    8,753.64/12,081.40 = 5,218.90/x
  3. Step 3: Cross multiply
    8,753.64x = 12,081.40 × 5,218.90
  4. Step 4: Simplify right side
    8,753.64x = 63,051,604.57
  5. Step 5: Solve for x
    x = 63,051,604.57/8,753.64
  6. Step 6: Final answer
    x = 7,202.90

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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.