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Finding the Fourth Proportional to 6,359.80, 8,770.42 and 4,867.76

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Solution

The fourth proportional to 6,359.80, 8,770.42 and 4,867.76 is: 6,712.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,359.80 : 8,770.42 = 4,867.76 : x
  2. Step 2: Convert to fraction form
    6,359.80/8,770.42 = 4,867.76/x
  3. Step 3: Cross multiply
    6,359.80x = 8,770.42 × 4,867.76
  4. Step 4: Simplify right side
    6,359.80x = 42,692,299.66
  5. Step 5: Solve for x
    x = 42,692,299.66/6,359.80
  6. Step 6: Final answer
    x = 6,712.84

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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.