Home / 7,072.40-10,608.60-5,437.20

Finding the Fourth Proportional to 7,072.40, 10,608.60 and 5,437.20

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Solution

The fourth proportional to 7,072.40, 10,608.60 and 5,437.20 is: 8,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.40 : 10,608.60 = 5,437.20 : x
  2. Step 2: Convert to fraction form
    7,072.40/10,608.60 = 5,437.20/x
  3. Step 3: Cross multiply
    7,072.40x = 10,608.60 × 5,437.20
  4. Step 4: Simplify right side
    7,072.40x = 57,681,079.92
  5. Step 5: Solve for x
    x = 57,681,079.92/7,072.40
  6. Step 6: Final answer
    x = 8,155.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.