Home / 7,342.40-10,132.28-4,155.80

Finding the Fourth Proportional to 7,342.40, 10,132.28 and 4,155.80

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Solution

The fourth proportional to 7,342.40, 10,132.28 and 4,155.80 is: 5,734.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.40 : 10,132.28 = 4,155.80 : x
  2. Step 2: Convert to fraction form
    7,342.40/10,132.28 = 4,155.80/x
  3. Step 3: Cross multiply
    7,342.40x = 10,132.28 × 4,155.80
  4. Step 4: Simplify right side
    7,342.40x = 42,107,729.22
  5. Step 5: Solve for x
    x = 42,107,729.22/7,342.40
  6. Step 6: Final answer
    x = 5,734.87

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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.