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Finding the Fourth Proportional to 2,734.74, 3,774.15 and 1,555.74

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Solution

The fourth proportional to 2,734.74, 3,774.15 and 1,555.74 is: 2,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,734.74 : 3,774.15 = 1,555.74 : x
  2. Step 2: Convert to fraction form
    2,734.74/3,774.15 = 1,555.74/x
  3. Step 3: Cross multiply
    2,734.74x = 3,774.15 × 1,555.74
  4. Step 4: Simplify right side
    2,734.74x = 5,871,596.12
  5. Step 5: Solve for x
    x = 5,871,596.12/2,734.74
  6. Step 6: Final answer
    x = 2,147.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.