Home / 5,631.40-7,771.12-3,113.48

Finding the Fourth Proportional to 5,631.40, 7,771.12 and 3,113.48

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Solution

The fourth proportional to 5,631.40, 7,771.12 and 3,113.48 is: 4,296.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.40 : 7,771.12 = 3,113.48 : x
  2. Step 2: Convert to fraction form
    5,631.40/7,771.12 = 3,113.48/x
  3. Step 3: Cross multiply
    5,631.40x = 7,771.12 × 3,113.48
  4. Step 4: Simplify right side
    5,631.40x = 24,195,226.70
  5. Step 5: Solve for x
    x = 24,195,226.70/5,631.40
  6. Step 6: Final answer
    x = 4,296.49

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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.