Home / 5,342.40-8,008.80-4,759.20

Finding the Fourth Proportional to 5,342.40, 8,008.80 and 4,759.20

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Solution

The fourth proportional to 5,342.40, 8,008.80 and 4,759.20 is: 7,134.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,342.40 : 8,008.80 = 4,759.20 : x
  2. Step 2: Convert to fraction form
    5,342.40/8,008.80 = 4,759.20/x
  3. Step 3: Cross multiply
    5,342.40x = 8,008.80 × 4,759.20
  4. Step 4: Simplify right side
    5,342.40x = 38,115,480.96
  5. Step 5: Solve for x
    x = 38,115,480.96/5,342.40
  6. Step 6: Final answer
    x = 7,134.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.