Home / 2,853-4,281.30-1,121.58

Finding the Fourth Proportional to 2,853, 4,281.30 and 1,121.58

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Solution

The fourth proportional to 2,853, 4,281.30 and 1,121.58 is: 1,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853 : 4,281.30 = 1,121.58 : x
  2. Step 2: Convert to fraction form
    2,853/4,281.30 = 1,121.58/x
  3. Step 3: Cross multiply
    2,853x = 4,281.30 × 1,121.58
  4. Step 4: Simplify right side
    2,853x = 4,801,820.45
  5. Step 5: Solve for x
    x = 4,801,820.45/2,853
  6. Step 6: Final answer
    x = 1,683.08

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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.