Home / 1,389.20-2,081.99-566.51

Finding the Fourth Proportional to 1,389.20, 2,081.99 and 566.51

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Solution

The fourth proportional to 1,389.20, 2,081.99 and 566.51 is: 849.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.20 : 2,081.99 = 566.51 : x
  2. Step 2: Convert to fraction form
    1,389.20/2,081.99 = 566.51/x
  3. Step 3: Cross multiply
    1,389.20x = 2,081.99 × 566.51
  4. Step 4: Simplify right side
    1,389.20x = 1,179,454.91
  5. Step 5: Solve for x
    x = 1,179,454.91/1,389.20
  6. Step 6: Final answer
    x = 849.02

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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.