Home / 5,138.10-7,089.78-3,013.46

Finding the Fourth Proportional to 5,138.10, 7,089.78 and 3,013.46

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Solution

The fourth proportional to 5,138.10, 7,089.78 and 3,013.46 is: 4,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.10 : 7,089.78 = 3,013.46 : x
  2. Step 2: Convert to fraction form
    5,138.10/7,089.78 = 3,013.46/x
  3. Step 3: Cross multiply
    5,138.10x = 7,089.78 × 3,013.46
  4. Step 4: Simplify right side
    5,138.10x = 21,364,768.44
  5. Step 5: Solve for x
    x = 21,364,768.44/5,138.10
  6. Step 6: Final answer
    x = 4,158.11

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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.