Home / 1,389.12-2,083.02-566.70

Finding the Fourth Proportional to 1,389.12, 2,083.02 and 566.70

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Solution

The fourth proportional to 1,389.12, 2,083.02 and 566.70 is: 849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.12 : 2,083.02 = 566.70 : x
  2. Step 2: Convert to fraction form
    1,389.12/2,083.02 = 566.70/x
  3. Step 3: Cross multiply
    1,389.12x = 2,083.02 × 566.70
  4. Step 4: Simplify right side
    1,389.12x = 1,180,447.43
  5. Step 5: Solve for x
    x = 1,180,447.43/1,389.12
  6. Step 6: Final answer
    x = 849.78

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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.