Home / 2,769.20-4,153.70-1,125.70

Finding the Fourth Proportional to 2,769.20, 4,153.70 and 1,125.70

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Solution

The fourth proportional to 2,769.20, 4,153.70 and 1,125.70 is: 1,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.20 : 4,153.70 = 1,125.70 : x
  2. Step 2: Convert to fraction form
    2,769.20/4,153.70 = 1,125.70/x
  3. Step 3: Cross multiply
    2,769.20x = 4,153.70 × 1,125.70
  4. Step 4: Simplify right side
    2,769.20x = 4,675,820.09
  5. Step 5: Solve for x
    x = 4,675,820.09/2,769.20
  6. Step 6: Final answer
    x = 1,688.51

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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.