Home / 4,117.80-6,177.78-2,143.56

Finding the Fourth Proportional to 4,117.80, 6,177.78 and 2,143.56

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Solution

The fourth proportional to 4,117.80, 6,177.78 and 2,143.56 is: 3,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,117.80 : 6,177.78 = 2,143.56 : x
  2. Step 2: Convert to fraction form
    4,117.80/6,177.78 = 2,143.56/x
  3. Step 3: Cross multiply
    4,117.80x = 6,177.78 × 2,143.56
  4. Step 4: Simplify right side
    4,117.80x = 13,242,442.10
  5. Step 5: Solve for x
    x = 13,242,442.10/4,117.80
  6. Step 6: Final answer
    x = 3,215.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.