Home / 8,087.40-12,131.10-5,159.52

Finding the Fourth Proportional to 8,087.40, 12,131.10 and 5,159.52

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Solution

The fourth proportional to 8,087.40, 12,131.10 and 5,159.52 is: 7,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.40 : 12,131.10 = 5,159.52 : x
  2. Step 2: Convert to fraction form
    8,087.40/12,131.10 = 5,159.52/x
  3. Step 3: Cross multiply
    8,087.40x = 12,131.10 × 5,159.52
  4. Step 4: Simplify right side
    8,087.40x = 62,590,653.07
  5. Step 5: Solve for x
    x = 62,590,653.07/8,087.40
  6. Step 6: Final answer
    x = 7,739.28

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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.