Home / 2,289.13-3,432.85-902.78

Finding the Fourth Proportional to 2,289.13, 3,432.85 and 902.78

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Solution

The fourth proportional to 2,289.13, 3,432.85 and 902.78 is: 1,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.13 : 3,432.85 = 902.78 : x
  2. Step 2: Convert to fraction form
    2,289.13/3,432.85 = 902.78/x
  3. Step 3: Cross multiply
    2,289.13x = 3,432.85 × 902.78
  4. Step 4: Simplify right side
    2,289.13x = 3,099,101.77
  5. Step 5: Solve for x
    x = 3,099,101.77/2,289.13
  6. Step 6: Final answer
    x = 1,353.84

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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.