Home / 5,389.06-8,083.68-1,691.20

Finding the Fourth Proportional to 5,389.06, 8,083.68 and 1,691.20

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Solution

The fourth proportional to 5,389.06, 8,083.68 and 1,691.20 is: 2,536.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.06 : 8,083.68 = 1,691.20 : x
  2. Step 2: Convert to fraction form
    5,389.06/8,083.68 = 1,691.20/x
  3. Step 3: Cross multiply
    5,389.06x = 8,083.68 × 1,691.20
  4. Step 4: Simplify right side
    5,389.06x = 13,671,119.62
  5. Step 5: Solve for x
    x = 13,671,119.62/5,389.06
  6. Step 6: Final answer
    x = 2,536.83

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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.