Home / 4,878.12-6,731.40-2,989.44

Finding the Fourth Proportional to 4,878.12, 6,731.40 and 2,989.44

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Solution

The fourth proportional to 4,878.12, 6,731.40 and 2,989.44 is: 4,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.12 : 6,731.40 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    4,878.12/6,731.40 = 2,989.44/x
  3. Step 3: Cross multiply
    4,878.12x = 6,731.40 × 2,989.44
  4. Step 4: Simplify right side
    4,878.12x = 20,123,116.42
  5. Step 5: Solve for x
    x = 20,123,116.42/4,878.12
  6. Step 6: Final answer
    x = 4,125.18

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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.