Home / 1,445.40-2,166.73-1,317

Finding the Fourth Proportional to 1,445.40, 2,166.73 and 1,317

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Solution

The fourth proportional to 1,445.40, 2,166.73 and 1,317 is: 1,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.40 : 2,166.73 = 1,317 : x
  2. Step 2: Convert to fraction form
    1,445.40/2,166.73 = 1,317/x
  3. Step 3: Cross multiply
    1,445.40x = 2,166.73 × 1,317
  4. Step 4: Simplify right side
    1,445.40x = 2,853,583.41
  5. Step 5: Solve for x
    x = 2,853,583.41/1,445.40
  6. Step 6: Final answer
    x = 1,974.25

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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.