Home / 1,515.70-2,272.02-1,028.80

Finding the Fourth Proportional to 1,515.70, 2,272.02 and 1,028.80

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Solution

The fourth proportional to 1,515.70, 2,272.02 and 1,028.80 is: 1,542.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.70 : 2,272.02 = 1,028.80 : x
  2. Step 2: Convert to fraction form
    1,515.70/2,272.02 = 1,028.80/x
  3. Step 3: Cross multiply
    1,515.70x = 2,272.02 × 1,028.80
  4. Step 4: Simplify right side
    1,515.70x = 2,337,454.18
  5. Step 5: Solve for x
    x = 2,337,454.18/1,515.70
  6. Step 6: Final answer
    x = 1,542.16

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1.5x scale

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.