Home / 7,331.80-10,118.46-4,189

Finding the Fourth Proportional to 7,331.80, 10,118.46 and 4,189

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Solution

The fourth proportional to 7,331.80, 10,118.46 and 4,189 is: 5,781.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.80 : 10,118.46 = 4,189 : x
  2. Step 2: Convert to fraction form
    7,331.80/10,118.46 = 4,189/x
  3. Step 3: Cross multiply
    7,331.80x = 10,118.46 × 4,189
  4. Step 4: Simplify right side
    7,331.80x = 42,386,228.94
  5. Step 5: Solve for x
    x = 42,386,228.94/7,331.80
  6. Step 6: Final answer
    x = 5,781.15

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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.