Home / 5,106.90-7,044.12-4,122.78

Finding the Fourth Proportional to 5,106.90, 7,044.12 and 4,122.78

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Solution

The fourth proportional to 5,106.90, 7,044.12 and 4,122.78 is: 5,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.90 : 7,044.12 = 4,122.78 : x
  2. Step 2: Convert to fraction form
    5,106.90/7,044.12 = 4,122.78/x
  3. Step 3: Cross multiply
    5,106.90x = 7,044.12 × 4,122.78
  4. Step 4: Simplify right side
    5,106.90x = 29,041,357.05
  5. Step 5: Solve for x
    x = 29,041,357.05/5,106.90
  6. Step 6: Final answer
    x = 5,686.69

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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.