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Finding the Fourth Proportional to 6,773.20, 9,345.60 and 3,977.20

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Solution

The fourth proportional to 6,773.20, 9,345.60 and 3,977.20 is: 5,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,773.20 : 9,345.60 = 3,977.20 : x
  2. Step 2: Convert to fraction form
    6,773.20/9,345.60 = 3,977.20/x
  3. Step 3: Cross multiply
    6,773.20x = 9,345.60 × 3,977.20
  4. Step 4: Simplify right side
    6,773.20x = 37,169,320.32
  5. Step 5: Solve for x
    x = 37,169,320.32/6,773.20
  6. Step 6: Final answer
    x = 5,487.70

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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.