Home / 2,289.12-3,158.99-1,241.18

Finding the Fourth Proportional to 2,289.12, 3,158.99 and 1,241.18

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Solution

The fourth proportional to 2,289.12, 3,158.99 and 1,241.18 is: 1,712.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.12 : 3,158.99 = 1,241.18 : x
  2. Step 2: Convert to fraction form
    2,289.12/3,158.99 = 1,241.18/x
  3. Step 3: Cross multiply
    2,289.12x = 3,158.99 × 1,241.18
  4. Step 4: Simplify right side
    2,289.12x = 3,920,853.21
  5. Step 5: Solve for x
    x = 3,920,853.21/2,289.12
  6. Step 6: Final answer
    x = 1,712.82

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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.