Home / 8,142.40-11,232.30-5,153.10

Finding the Fourth Proportional to 8,142.40, 11,232.30 and 5,153.10

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Solution

The fourth proportional to 8,142.40, 11,232.30 and 5,153.10 is: 7,108.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.40 : 11,232.30 = 5,153.10 : x
  2. Step 2: Convert to fraction form
    8,142.40/11,232.30 = 5,153.10/x
  3. Step 3: Cross multiply
    8,142.40x = 11,232.30 × 5,153.10
  4. Step 4: Simplify right side
    8,142.40x = 57,881,165.13
  5. Step 5: Solve for x
    x = 57,881,165.13/8,142.40
  6. Step 6: Final answer
    x = 7,108.61

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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.