Home / 3,638.15-5,452.65-1,555.70

Finding the Fourth Proportional to 3,638.15, 5,452.65 and 1,555.70

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Solution

The fourth proportional to 3,638.15, 5,452.65 and 1,555.70 is: 2,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.15 : 5,452.65 = 1,555.70 : x
  2. Step 2: Convert to fraction form
    3,638.15/5,452.65 = 1,555.70/x
  3. Step 3: Cross multiply
    3,638.15x = 5,452.65 × 1,555.70
  4. Step 4: Simplify right side
    3,638.15x = 8,482,687.61
  5. Step 5: Solve for x
    x = 8,482,687.61/3,638.15
  6. Step 6: Final answer
    x = 2,331.60

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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.