Home / 1,281.16-1,923.88-1,120.24

Finding the Fourth Proportional to 1,281.16, 1,923.88 and 1,120.24

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Solution

The fourth proportional to 1,281.16, 1,923.88 and 1,120.24 is: 1,682.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.16 : 1,923.88 = 1,120.24 : x
  2. Step 2: Convert to fraction form
    1,281.16/1,923.88 = 1,120.24/x
  3. Step 3: Cross multiply
    1,281.16x = 1,923.88 × 1,120.24
  4. Step 4: Simplify right side
    1,281.16x = 2,155,207.33
  5. Step 5: Solve for x
    x = 2,155,207.33/1,281.16
  6. Step 6: Final answer
    x = 1,682.23

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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.