Home / 3,436.65-5,154.96-1,128.15

Finding the Fourth Proportional to 3,436.65, 5,154.96 and 1,128.15

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Solution

The fourth proportional to 3,436.65, 5,154.96 and 1,128.15 is: 1,692.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.65 : 5,154.96 = 1,128.15 : x
  2. Step 2: Convert to fraction form
    3,436.65/5,154.96 = 1,128.15/x
  3. Step 3: Cross multiply
    3,436.65x = 5,154.96 × 1,128.15
  4. Step 4: Simplify right side
    3,436.65x = 5,815,568.12
  5. Step 5: Solve for x
    x = 5,815,568.12/3,436.65
  6. Step 6: Final answer
    x = 1,692.22

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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.