Home / 4,215.50-6,335.40-4,191.20

Finding the Fourth Proportional to 4,215.50, 6,335.40 and 4,191.20

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Solution

The fourth proportional to 4,215.50, 6,335.40 and 4,191.20 is: 6,298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.50 : 6,335.40 = 4,191.20 : x
  2. Step 2: Convert to fraction form
    4,215.50/6,335.40 = 4,191.20/x
  3. Step 3: Cross multiply
    4,215.50x = 6,335.40 × 4,191.20
  4. Step 4: Simplify right side
    4,215.50x = 26,552,928.48
  5. Step 5: Solve for x
    x = 26,552,928.48/4,215.50
  6. Step 6: Final answer
    x = 6,298.88

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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.