Home / 4,878.78-6,732.27-2,989.50

Finding the Fourth Proportional to 4,878.78, 6,732.27 and 2,989.50

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Solution

The fourth proportional to 4,878.78, 6,732.27 and 2,989.50 is: 4,125.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.78 : 6,732.27 = 2,989.50 : x
  2. Step 2: Convert to fraction form
    4,878.78/6,732.27 = 2,989.50/x
  3. Step 3: Cross multiply
    4,878.78x = 6,732.27 × 2,989.50
  4. Step 4: Simplify right side
    4,878.78x = 20,126,121.17
  5. Step 5: Solve for x
    x = 20,126,121.17/4,878.78
  6. Step 6: Final answer
    x = 4,125.24

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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.