Home / 9,159.09-12,639.46-5,180.98

Finding the Fourth Proportional to 9,159.09, 12,639.46 and 5,180.98

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Solution

The fourth proportional to 9,159.09, 12,639.46 and 5,180.98 is: 7,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.09 : 12,639.46 = 5,180.98 : x
  2. Step 2: Convert to fraction form
    9,159.09/12,639.46 = 5,180.98/x
  3. Step 3: Cross multiply
    9,159.09x = 12,639.46 × 5,180.98
  4. Step 4: Simplify right side
    9,159.09x = 65,484,789.47
  5. Step 5: Solve for x
    x = 65,484,789.47/9,159.09
  6. Step 6: Final answer
    x = 7,149.70

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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.