Home / 4,215.28-5,818.32-2,447.68

Finding the Fourth Proportional to 4,215.28, 5,818.32 and 2,447.68

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Solution

The fourth proportional to 4,215.28, 5,818.32 and 2,447.68 is: 3,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.28 : 5,818.32 = 2,447.68 : x
  2. Step 2: Convert to fraction form
    4,215.28/5,818.32 = 2,447.68/x
  3. Step 3: Cross multiply
    4,215.28x = 5,818.32 × 2,447.68
  4. Step 4: Simplify right side
    4,215.28x = 14,241,385.50
  5. Step 5: Solve for x
    x = 14,241,385.50/4,215.28
  6. Step 6: Final answer
    x = 3,378.51

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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.