Home / 5,631.79-7,771.19-3,113.56

Finding the Fourth Proportional to 5,631.79, 7,771.19 and 3,113.56

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Solution

The fourth proportional to 5,631.79, 7,771.19 and 3,113.56 is: 4,296.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.79 : 7,771.19 = 3,113.56 : x
  2. Step 2: Convert to fraction form
    5,631.79/7,771.19 = 3,113.56/x
  3. Step 3: Cross multiply
    5,631.79x = 7,771.19 × 3,113.56
  4. Step 4: Simplify right side
    5,631.79x = 24,196,011.91
  5. Step 5: Solve for x
    x = 24,196,011.91/5,631.79
  6. Step 6: Final answer
    x = 4,296.33

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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.