Home / 8,080.31-11,125.50-7,342.17

Finding the Fourth Proportional to 8,080.31, 11,125.50 and 7,342.17

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Solution

The fourth proportional to 8,080.31, 11,125.50 and 7,342.17 is: 10,109.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.31 : 11,125.50 = 7,342.17 : x
  2. Step 2: Convert to fraction form
    8,080.31/11,125.50 = 7,342.17/x
  3. Step 3: Cross multiply
    8,080.31x = 11,125.50 × 7,342.17
  4. Step 4: Simplify right side
    8,080.31x = 81,685,312.34
  5. Step 5: Solve for x
    x = 81,685,312.34/8,080.31
  6. Step 6: Final answer
    x = 10,109.19

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Half scale
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Double scale
Find fourth proportional to 8,081.31, 11,126.88 and 7,343.17
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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.