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Finding the Fourth Proportional to 8,330.88, 12,490.15 and 5,043.20

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Solution

The fourth proportional to 8,330.88, 12,490.15 and 5,043.20 is: 7,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.88 : 12,490.15 = 5,043.20 : x
  2. Step 2: Convert to fraction form
    8,330.88/12,490.15 = 5,043.20/x
  3. Step 3: Cross multiply
    8,330.88x = 12,490.15 × 5,043.20
  4. Step 4: Simplify right side
    8,330.88x = 62,990,236.81
  5. Step 5: Solve for x
    x = 62,990,236.81/8,330.88
  6. Step 6: Final answer
    x = 7,561.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.