Home / 1,317.23-1,818-1,003.53

Finding the Fourth Proportional to 1,317.23, 1,818 and 1,003.53

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Solution

The fourth proportional to 1,317.23, 1,818 and 1,003.53 is: 1,385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.23 : 1,818 = 1,003.53 : x
  2. Step 2: Convert to fraction form
    1,317.23/1,818 = 1,003.53/x
  3. Step 3: Cross multiply
    1,317.23x = 1,818 × 1,003.53
  4. Step 4: Simplify right side
    1,317.23x = 1,824,417.54
  5. Step 5: Solve for x
    x = 1,824,417.54/1,317.23
  6. Step 6: Final answer
    x = 1,385.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.