Home / 1,515.80-2,269.01-1,294.40

Finding the Fourth Proportional to 1,515.80, 2,269.01 and 1,294.40

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Solution

The fourth proportional to 1,515.80, 2,269.01 and 1,294.40 is: 1,937.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.80 : 2,269.01 = 1,294.40 : x
  2. Step 2: Convert to fraction form
    1,515.80/2,269.01 = 1,294.40/x
  3. Step 3: Cross multiply
    1,515.80x = 2,269.01 × 1,294.40
  4. Step 4: Simplify right side
    1,515.80x = 2,936,988.73
  5. Step 5: Solve for x
    x = 2,936,988.73/1,515.80
  6. Step 6: Final answer
    x = 1,937.59

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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.