Home / 8,142.40-12,213.28-5,670.08

Finding the Fourth Proportional to 8,142.40, 12,213.28 and 5,670.08

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Solution

The fourth proportional to 8,142.40, 12,213.28 and 5,670.08 is: 8,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.40 : 12,213.28 = 5,670.08 : x
  2. Step 2: Convert to fraction form
    8,142.40/12,213.28 = 5,670.08/x
  3. Step 3: Cross multiply
    8,142.40x = 12,213.28 × 5,670.08
  4. Step 4: Simplify right side
    8,142.40x = 69,250,274.66
  5. Step 5: Solve for x
    x = 69,250,274.66/8,142.40
  6. Step 6: Final answer
    x = 8,504.90

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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.