Home / 2,269.84-3,405.12-1,115.68

Finding the Fourth Proportional to 2,269.84, 3,405.12 and 1,115.68

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Solution

The fourth proportional to 2,269.84, 3,405.12 and 1,115.68 is: 1,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.84 : 3,405.12 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    2,269.84/3,405.12 = 1,115.68/x
  3. Step 3: Cross multiply
    2,269.84x = 3,405.12 × 1,115.68
  4. Step 4: Simplify right side
    2,269.84x = 3,799,024.28
  5. Step 5: Solve for x
    x = 3,799,024.28/2,269.84
  6. Step 6: Final answer
    x = 1,673.70

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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.