Home / 8,939.12-12,336.54-5,162.98

Finding the Fourth Proportional to 8,939.12, 12,336.54 and 5,162.98

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Solution

The fourth proportional to 8,939.12, 12,336.54 and 5,162.98 is: 7,125.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.12 : 12,336.54 = 5,162.98 : x
  2. Step 2: Convert to fraction form
    8,939.12/12,336.54 = 5,162.98/x
  3. Step 3: Cross multiply
    8,939.12x = 12,336.54 × 5,162.98
  4. Step 4: Simplify right side
    8,939.12x = 63,693,309.29
  5. Step 5: Solve for x
    x = 63,693,309.29/8,939.12
  6. Step 6: Final answer
    x = 7,125.23

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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.