Home / 5,380.62-7,428.74-4,820.10

Finding the Fourth Proportional to 5,380.62, 7,428.74 and 4,820.10

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Solution

The fourth proportional to 5,380.62, 7,428.74 and 4,820.10 is: 6,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.62 : 7,428.74 = 4,820.10 : x
  2. Step 2: Convert to fraction form
    5,380.62/7,428.74 = 4,820.10/x
  3. Step 3: Cross multiply
    5,380.62x = 7,428.74 × 4,820.10
  4. Step 4: Simplify right side
    5,380.62x = 35,807,245.57
  5. Step 5: Solve for x
    x = 35,807,245.57/5,380.62
  6. Step 6: Final answer
    x = 6,654.85

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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.