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Finding the Fourth Proportional to 6,476.20, 8,934.18 and 4,877.80

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Solution

The fourth proportional to 6,476.20, 8,934.18 and 4,877.80 is: 6,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,476.20 : 8,934.18 = 4,877.80 : x
  2. Step 2: Convert to fraction form
    6,476.20/8,934.18 = 4,877.80/x
  3. Step 3: Cross multiply
    6,476.20x = 8,934.18 × 4,877.80
  4. Step 4: Simplify right side
    6,476.20x = 43,579,143.20
  5. Step 5: Solve for x
    x = 43,579,143.20/6,476.20
  6. Step 6: Final answer
    x = 6,729.12

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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.