Home / 4,478.15-6,714.50-2,138.87

Finding the Fourth Proportional to 4,478.15, 6,714.50 and 2,138.87

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Solution

The fourth proportional to 4,478.15, 6,714.50 and 2,138.87 is: 3,207.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478.15 : 6,714.50 = 2,138.87 : x
  2. Step 2: Convert to fraction form
    4,478.15/6,714.50 = 2,138.87/x
  3. Step 3: Cross multiply
    4,478.15x = 6,714.50 × 2,138.87
  4. Step 4: Simplify right side
    4,478.15x = 14,361,448.71
  5. Step 5: Solve for x
    x = 14,361,448.71/4,478.15
  6. Step 6: Final answer
    x = 3,207.00

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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.