Home / 1,515.72-2,271.84-1,242.36

Finding the Fourth Proportional to 1,515.72, 2,271.84 and 1,242.36

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Solution

The fourth proportional to 1,515.72, 2,271.84 and 1,242.36 is: 1,862.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.72 : 2,271.84 = 1,242.36 : x
  2. Step 2: Convert to fraction form
    1,515.72/2,271.84 = 1,242.36/x
  3. Step 3: Cross multiply
    1,515.72x = 2,271.84 × 1,242.36
  4. Step 4: Simplify right side
    1,515.72x = 2,822,443.14
  5. Step 5: Solve for x
    x = 2,822,443.14/1,515.72
  6. Step 6: Final answer
    x = 1,862.11

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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.