Home / 4,878.11-6,730.04-2,989.01

Finding the Fourth Proportional to 4,878.11, 6,730.04 and 2,989.01

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Solution

The fourth proportional to 4,878.11, 6,730.04 and 2,989.01 is: 4,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.11 : 6,730.04 = 2,989.01 : x
  2. Step 2: Convert to fraction form
    4,878.11/6,730.04 = 2,989.01/x
  3. Step 3: Cross multiply
    4,878.11x = 6,730.04 × 2,989.01
  4. Step 4: Simplify right side
    4,878.11x = 20,116,108.27
  5. Step 5: Solve for x
    x = 20,116,108.27/4,878.11
  6. Step 6: Final answer
    x = 4,123.75

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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.