Home / 1,317.61-1,976.88-587.12

Finding the Fourth Proportional to 1,317.61, 1,976.88 and 587.12

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Solution

The fourth proportional to 1,317.61, 1,976.88 and 587.12 is: 880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.61 : 1,976.88 = 587.12 : x
  2. Step 2: Convert to fraction form
    1,317.61/1,976.88 = 587.12/x
  3. Step 3: Cross multiply
    1,317.61x = 1,976.88 × 587.12
  4. Step 4: Simplify right side
    1,317.61x = 1,160,665.79
  5. Step 5: Solve for x
    x = 1,160,665.79/1,317.61
  6. Step 6: Final answer
    x = 880.89

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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.