Home / 8,689.07-11,990.62-5,150.18

Finding the Fourth Proportional to 8,689.07, 11,990.62 and 5,150.18

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Solution

The fourth proportional to 8,689.07, 11,990.62 and 5,150.18 is: 7,107.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.07 : 11,990.62 = 5,150.18 : x
  2. Step 2: Convert to fraction form
    8,689.07/11,990.62 = 5,150.18/x
  3. Step 3: Cross multiply
    8,689.07x = 11,990.62 × 5,150.18
  4. Step 4: Simplify right side
    8,689.07x = 61,753,851.31
  5. Step 5: Solve for x
    x = 61,753,851.31/8,689.07
  6. Step 6: Final answer
    x = 7,107.07

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Half scale
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Double scale
Find fourth proportional to 8,690.07, 11,992 and 5,151.18
Similar ratio
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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.