Home / 1,538.32-2,292.56-1,489.12

Finding the Fourth Proportional to 1,538.32, 2,292.56 and 1,489.12

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Solution

The fourth proportional to 1,538.32, 2,292.56 and 1,489.12 is: 2,219.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.32 : 2,292.56 = 1,489.12 : x
  2. Step 2: Convert to fraction form
    1,538.32/2,292.56 = 1,489.12/x
  3. Step 3: Cross multiply
    1,538.32x = 2,292.56 × 1,489.12
  4. Step 4: Simplify right side
    1,538.32x = 3,413,896.95
  5. Step 5: Solve for x
    x = 3,413,896.95/1,538.32
  6. Step 6: Final answer
    x = 2,219.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.