Home / 5,132.76-7,078.86-3,340.68

Finding the Fourth Proportional to 5,132.76, 7,078.86 and 3,340.68

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Solution

The fourth proportional to 5,132.76, 7,078.86 and 3,340.68 is: 4,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.76 : 7,078.86 = 3,340.68 : x
  2. Step 2: Convert to fraction form
    5,132.76/7,078.86 = 3,340.68/x
  3. Step 3: Cross multiply
    5,132.76x = 7,078.86 × 3,340.68
  4. Step 4: Simplify right side
    5,132.76x = 23,648,206.02
  5. Step 5: Solve for x
    x = 23,648,206.02/5,132.76
  6. Step 6: Final answer
    x = 4,607.31

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Half scale
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Double scale
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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.