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Finding the Fourth Proportional to 5,630.55, 7,770.12 and 3,146.55

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Solution

The fourth proportional to 5,630.55, 7,770.12 and 3,146.55 is: 4,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.55 : 7,770.12 = 3,146.55 : x
  2. Step 2: Convert to fraction form
    5,630.55/7,770.12 = 3,146.55/x
  3. Step 3: Cross multiply
    5,630.55x = 7,770.12 × 3,146.55
  4. Step 4: Simplify right side
    5,630.55x = 24,449,071.09
  5. Step 5: Solve for x
    x = 24,449,071.09/5,630.55
  6. Step 6: Final answer
    x = 4,342.22

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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.