Home / 7,240.92-9,990.18-4,255.80

Finding the Fourth Proportional to 7,240.92, 9,990.18 and 4,255.80

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Solution

The fourth proportional to 7,240.92, 9,990.18 and 4,255.80 is: 5,871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.92 : 9,990.18 = 4,255.80 : x
  2. Step 2: Convert to fraction form
    7,240.92/9,990.18 = 4,255.80/x
  3. Step 3: Cross multiply
    7,240.92x = 9,990.18 × 4,255.80
  4. Step 4: Simplify right side
    7,240.92x = 42,516,208.04
  5. Step 5: Solve for x
    x = 42,516,208.04/7,240.92
  6. Step 6: Final answer
    x = 5,871.66

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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.