Home / 6,445.28-8,887.73-4,770.20

Finding the Fourth Proportional to 6,445.28, 8,887.73 and 4,770.20

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Solution

The fourth proportional to 6,445.28, 8,887.73 and 4,770.20 is: 6,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.28 : 8,887.73 = 4,770.20 : x
  2. Step 2: Convert to fraction form
    6,445.28/8,887.73 = 4,770.20/x
  3. Step 3: Cross multiply
    6,445.28x = 8,887.73 × 4,770.20
  4. Step 4: Simplify right side
    6,445.28x = 42,396,217.13
  5. Step 5: Solve for x
    x = 42,396,217.13/6,445.28
  6. Step 6: Final answer
    x = 6,577.88

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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.