Home / 5,480.11-7,560.70-3,120.58

Finding the Fourth Proportional to 5,480.11, 7,560.70 and 3,120.58

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Solution

The fourth proportional to 5,480.11, 7,560.70 and 3,120.58 is: 4,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.11 : 7,560.70 = 3,120.58 : x
  2. Step 2: Convert to fraction form
    5,480.11/7,560.70 = 3,120.58/x
  3. Step 3: Cross multiply
    5,480.11x = 7,560.70 × 3,120.58
  4. Step 4: Simplify right side
    5,480.11x = 23,593,769.21
  5. Step 5: Solve for x
    x = 23,593,769.21/5,480.11
  6. Step 6: Final answer
    x = 4,305.35

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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.