Home / 1,317.29-1,976.96-1,307.04

Finding the Fourth Proportional to 1,317.29, 1,976.96 and 1,307.04

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Solution

The fourth proportional to 1,317.29, 1,976.96 and 1,307.04 is: 1,961.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.29 : 1,976.96 = 1,307.04 : x
  2. Step 2: Convert to fraction form
    1,317.29/1,976.96 = 1,307.04/x
  3. Step 3: Cross multiply
    1,317.29x = 1,976.96 × 1,307.04
  4. Step 4: Simplify right side
    1,317.29x = 2,583,954.30
  5. Step 5: Solve for x
    x = 2,583,954.30/1,317.29
  6. Step 6: Final answer
    x = 1,961.57

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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.