Home / 4,721.70-7,048.46-4,138.50

Finding the Fourth Proportional to 4,721.70, 7,048.46 and 4,138.50

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Solution

The fourth proportional to 4,721.70, 7,048.46 and 4,138.50 is: 6,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.70 : 7,048.46 = 4,138.50 : x
  2. Step 2: Convert to fraction form
    4,721.70/7,048.46 = 4,138.50/x
  3. Step 3: Cross multiply
    4,721.70x = 7,048.46 × 4,138.50
  4. Step 4: Simplify right side
    4,721.70x = 29,170,031.02
  5. Step 5: Solve for x
    x = 29,170,031.02/4,721.70
  6. Step 6: Final answer
    x = 6,177.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.