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Finding the Fourth Proportional to 3,173.85, 4,763.85 and 1,531.55

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Solution

The fourth proportional to 3,173.85, 4,763.85 and 1,531.55 is: 2,298.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.85 : 4,763.85 = 1,531.55 : x
  2. Step 2: Convert to fraction form
    3,173.85/4,763.85 = 1,531.55/x
  3. Step 3: Cross multiply
    3,173.85x = 4,763.85 × 1,531.55
  4. Step 4: Simplify right side
    3,173.85x = 7,296,066.81
  5. Step 5: Solve for x
    x = 7,296,066.81/3,173.85
  6. Step 6: Final answer
    x = 2,298.81

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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.