Home / 1,542.67-2,128.09-1,045.14

Finding the Fourth Proportional to 1,542.67, 2,128.09 and 1,045.14

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Solution

The fourth proportional to 1,542.67, 2,128.09 and 1,045.14 is: 1,441.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.67 : 2,128.09 = 1,045.14 : x
  2. Step 2: Convert to fraction form
    1,542.67/2,128.09 = 1,045.14/x
  3. Step 3: Cross multiply
    1,542.67x = 2,128.09 × 1,045.14
  4. Step 4: Simplify right side
    1,542.67x = 2,224,151.98
  5. Step 5: Solve for x
    x = 2,224,151.98/1,542.67
  6. Step 6: Final answer
    x = 1,441.75

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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.