Home / 1,585.14-2,376.42-661.39

Finding the Fourth Proportional to 1,585.14, 2,376.42 and 661.39

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Solution

The fourth proportional to 1,585.14, 2,376.42 and 661.39 is: 991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.14 : 2,376.42 = 661.39 : x
  2. Step 2: Convert to fraction form
    1,585.14/2,376.42 = 661.39/x
  3. Step 3: Cross multiply
    1,585.14x = 2,376.42 × 661.39
  4. Step 4: Simplify right side
    1,585.14x = 1,571,740.42
  5. Step 5: Solve for x
    x = 1,571,740.42/1,585.14
  6. Step 6: Final answer
    x = 991.55

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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.