Home / 1,321.83-1,810.68-1,307.25

Finding the Fourth Proportional to 1,321.83, 1,810.68 and 1,307.25

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Solution

The fourth proportional to 1,321.83, 1,810.68 and 1,307.25 is: 1,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.83 : 1,810.68 = 1,307.25 : x
  2. Step 2: Convert to fraction form
    1,321.83/1,810.68 = 1,307.25/x
  3. Step 3: Cross multiply
    1,321.83x = 1,810.68 × 1,307.25
  4. Step 4: Simplify right side
    1,321.83x = 2,367,006.53
  5. Step 5: Solve for x
    x = 2,367,006.53/1,321.83
  6. Step 6: Final answer
    x = 1,790.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.