Home / 4,118.20-6,182.10-4,089.40

Finding the Fourth Proportional to 4,118.20, 6,182.10 and 4,089.40

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Solution

The fourth proportional to 4,118.20, 6,182.10 and 4,089.40 is: 6,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,118.20 : 6,182.10 = 4,089.40 : x
  2. Step 2: Convert to fraction form
    4,118.20/6,182.10 = 4,089.40/x
  3. Step 3: Cross multiply
    4,118.20x = 6,182.10 × 4,089.40
  4. Step 4: Simplify right side
    4,118.20x = 25,281,079.74
  5. Step 5: Solve for x
    x = 25,281,079.74/4,118.20
  6. Step 6: Final answer
    x = 6,138.87

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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.