Home / 1,317.72-1,976.90-587.51

Finding the Fourth Proportional to 1,317.72, 1,976.90 and 587.51

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Solution

The fourth proportional to 1,317.72, 1,976.90 and 587.51 is: 881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.72 : 1,976.90 = 587.51 : x
  2. Step 2: Convert to fraction form
    1,317.72/1,976.90 = 587.51/x
  3. Step 3: Cross multiply
    1,317.72x = 1,976.90 × 587.51
  4. Step 4: Simplify right side
    1,317.72x = 1,161,435.70
  5. Step 5: Solve for x
    x = 1,161,435.70/1,317.72
  6. Step 6: Final answer
    x = 881.40

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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.