Home / 6,142.40-9,213.60-5,259.20

Finding the Fourth Proportional to 6,142.40, 9,213.60 and 5,259.20

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Solution

The fourth proportional to 6,142.40, 9,213.60 and 5,259.20 is: 7,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,142.40 : 9,213.60 = 5,259.20 : x
  2. Step 2: Convert to fraction form
    6,142.40/9,213.60 = 5,259.20/x
  3. Step 3: Cross multiply
    6,142.40x = 9,213.60 × 5,259.20
  4. Step 4: Simplify right side
    6,142.40x = 48,456,165.12
  5. Step 5: Solve for x
    x = 48,456,165.12/6,142.40
  6. Step 6: Final answer
    x = 7,888.80

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Similar ratio
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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.