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Finding the Fourth Proportional to 6,275.80, 8,650.56 and 4,947.40

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Solution

The fourth proportional to 6,275.80, 8,650.56 and 4,947.40 is: 6,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,275.80 : 8,650.56 = 4,947.40 : x
  2. Step 2: Convert to fraction form
    6,275.80/8,650.56 = 4,947.40/x
  3. Step 3: Cross multiply
    6,275.80x = 8,650.56 × 4,947.40
  4. Step 4: Simplify right side
    6,275.80x = 42,797,780.54
  5. Step 5: Solve for x
    x = 42,797,780.54/6,275.80
  6. Step 6: Final answer
    x = 6,819.49

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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.