Home / 9,159.45-12,639.56-5,181.27

Finding the Fourth Proportional to 9,159.45, 12,639.56 and 5,181.27

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Solution

The fourth proportional to 9,159.45, 12,639.56 and 5,181.27 is: 7,149.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.45 : 12,639.56 = 5,181.27 : x
  2. Step 2: Convert to fraction form
    9,159.45/12,639.56 = 5,181.27/x
  3. Step 3: Cross multiply
    9,159.45x = 12,639.56 × 5,181.27
  4. Step 4: Simplify right side
    9,159.45x = 65,488,947.13
  5. Step 5: Solve for x
    x = 65,488,947.13/9,159.45
  6. Step 6: Final answer
    x = 7,149.88

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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.