Home / 5,478.96-7,560.96-3,121.10

Finding the Fourth Proportional to 5,478.96, 7,560.96 and 3,121.10

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Solution

The fourth proportional to 5,478.96, 7,560.96 and 3,121.10 is: 4,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.96 : 7,560.96 = 3,121.10 : x
  2. Step 2: Convert to fraction form
    5,478.96/7,560.96 = 3,121.10/x
  3. Step 3: Cross multiply
    5,478.96x = 7,560.96 × 3,121.10
  4. Step 4: Simplify right side
    5,478.96x = 23,598,512.26
  5. Step 5: Solve for x
    x = 23,598,512.26/5,478.96
  6. Step 6: Final answer
    x = 4,307.12

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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.