Home / 7,937.20-11,905.80-2,390.32

Finding the Fourth Proportional to 7,937.20, 11,905.80 and 2,390.32

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Solution

The fourth proportional to 7,937.20, 11,905.80 and 2,390.32 is: 3,585.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.20 : 11,905.80 = 2,390.32 : x
  2. Step 2: Convert to fraction form
    7,937.20/11,905.80 = 2,390.32/x
  3. Step 3: Cross multiply
    7,937.20x = 11,905.80 × 2,390.32
  4. Step 4: Simplify right side
    7,937.20x = 28,458,671.86
  5. Step 5: Solve for x
    x = 28,458,671.86/7,937.20
  6. Step 6: Final answer
    x = 3,585.48

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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.