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Finding the Fourth Proportional to 5,439.38, 7,506.38 and 2,955.38

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Solution

The fourth proportional to 5,439.38, 7,506.38 and 2,955.38 is: 4,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.38 : 7,506.38 = 2,955.38 : x
  2. Step 2: Convert to fraction form
    5,439.38/7,506.38 = 2,955.38/x
  3. Step 3: Cross multiply
    5,439.38x = 7,506.38 × 2,955.38
  4. Step 4: Simplify right side
    5,439.38x = 22,184,175.18
  5. Step 5: Solve for x
    x = 22,184,175.18/5,439.38
  6. Step 6: Final answer
    x = 4,078.44

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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.