Home / 3,186.30-4,778.10-1,543.35

Finding the Fourth Proportional to 3,186.30, 4,778.10 and 1,543.35

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Solution

The fourth proportional to 3,186.30, 4,778.10 and 1,543.35 is: 2,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.30 : 4,778.10 = 1,543.35 : x
  2. Step 2: Convert to fraction form
    3,186.30/4,778.10 = 1,543.35/x
  3. Step 3: Cross multiply
    3,186.30x = 4,778.10 × 1,543.35
  4. Step 4: Simplify right side
    3,186.30x = 7,374,280.64
  5. Step 5: Solve for x
    x = 7,374,280.64/3,186.30
  6. Step 6: Final answer
    x = 2,314.37

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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.