Home / 5,275.60-7,278.87-3,680.53

Finding the Fourth Proportional to 5,275.60, 7,278.87 and 3,680.53

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Solution

The fourth proportional to 5,275.60, 7,278.87 and 3,680.53 is: 5,078.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.60 : 7,278.87 = 3,680.53 : x
  2. Step 2: Convert to fraction form
    5,275.60/7,278.87 = 3,680.53/x
  3. Step 3: Cross multiply
    5,275.60x = 7,278.87 × 3,680.53
  4. Step 4: Simplify right side
    5,275.60x = 26,790,099.40
  5. Step 5: Solve for x
    x = 26,790,099.40/5,275.60
  6. Step 6: Final answer
    x = 5,078.11

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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.