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Finding the Fourth Proportional to 2,389.96, 3,585.21 and 746.47

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Solution

The fourth proportional to 2,389.96, 3,585.21 and 746.47 is: 1,119.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.96 : 3,585.21 = 746.47 : x
  2. Step 2: Convert to fraction form
    2,389.96/3,585.21 = 746.47/x
  3. Step 3: Cross multiply
    2,389.96x = 3,585.21 × 746.47
  4. Step 4: Simplify right side
    2,389.96x = 2,676,251.71
  5. Step 5: Solve for x
    x = 2,676,251.71/2,389.96
  6. Step 6: Final answer
    x = 1,119.79

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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.