Home / 5,631.25-7,770.89-3,113.20

Finding the Fourth Proportional to 5,631.25, 7,770.89 and 3,113.20

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Solution

The fourth proportional to 5,631.25, 7,770.89 and 3,113.20 is: 4,296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.25 : 7,770.89 = 3,113.20 : x
  2. Step 2: Convert to fraction form
    5,631.25/7,770.89 = 3,113.20/x
  3. Step 3: Cross multiply
    5,631.25x = 7,770.89 × 3,113.20
  4. Step 4: Simplify right side
    5,631.25x = 24,192,307.55
  5. Step 5: Solve for x
    x = 24,192,307.55/5,631.25
  6. Step 6: Final answer
    x = 4,296.08

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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.