Home / 1,542.46-2,127.80-1,045.38

Finding the Fourth Proportional to 1,542.46, 2,127.80 and 1,045.38

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Solution

The fourth proportional to 1,542.46, 2,127.80 and 1,045.38 is: 1,442.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.46 : 2,127.80 = 1,045.38 : x
  2. Step 2: Convert to fraction form
    1,542.46/2,127.80 = 1,045.38/x
  3. Step 3: Cross multiply
    1,542.46x = 2,127.80 × 1,045.38
  4. Step 4: Simplify right side
    1,542.46x = 2,224,359.56
  5. Step 5: Solve for x
    x = 2,224,359.56/1,542.46
  6. Step 6: Final answer
    x = 1,442.09

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1.5x scale

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.