Home / 9,161.64-12,639.46-5,978.66

Finding the Fourth Proportional to 9,161.64, 12,639.46 and 5,978.66

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Solution

The fourth proportional to 9,161.64, 12,639.46 and 5,978.66 is: 8,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,161.64 : 12,639.46 = 5,978.66 : x
  2. Step 2: Convert to fraction form
    9,161.64/12,639.46 = 5,978.66/x
  3. Step 3: Cross multiply
    9,161.64x = 12,639.46 × 5,978.66
  4. Step 4: Simplify right side
    9,161.64x = 75,567,033.92
  5. Step 5: Solve for x
    x = 75,567,033.92/9,161.64
  6. Step 6: Final answer
    x = 8,248.20

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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.