Home / 5,631.31-7,771.20-3,079.07

Finding the Fourth Proportional to 5,631.31, 7,771.20 and 3,079.07

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Solution

The fourth proportional to 5,631.31, 7,771.20 and 3,079.07 is: 4,249.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.31 : 7,771.20 = 3,079.07 : x
  2. Step 2: Convert to fraction form
    5,631.31/7,771.20 = 3,079.07/x
  3. Step 3: Cross multiply
    5,631.31x = 7,771.20 × 3,079.07
  4. Step 4: Simplify right side
    5,631.31x = 23,928,068.78
  5. Step 5: Solve for x
    x = 23,928,068.78/5,631.31
  6. Step 6: Final answer
    x = 4,249.12

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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.