Home / 5,631.74-7,771.65-3,113.78

Finding the Fourth Proportional to 5,631.74, 7,771.65 and 3,113.78

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Solution

The fourth proportional to 5,631.74, 7,771.65 and 3,113.78 is: 4,296.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.74 : 7,771.65 = 3,113.78 : x
  2. Step 2: Convert to fraction form
    5,631.74/7,771.65 = 3,113.78/x
  3. Step 3: Cross multiply
    5,631.74x = 7,771.65 × 3,113.78
  4. Step 4: Simplify right side
    5,631.74x = 24,199,249.65
  5. Step 5: Solve for x
    x = 24,199,249.65/5,631.74
  6. Step 6: Final answer
    x = 4,296.94

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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.