Home / 5,122.90-7,069.98-2,885.02

Finding the Fourth Proportional to 5,122.90, 7,069.98 and 2,885.02

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Solution

The fourth proportional to 5,122.90, 7,069.98 and 2,885.02 is: 3,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.90 : 7,069.98 = 2,885.02 : x
  2. Step 2: Convert to fraction form
    5,122.90/7,069.98 = 2,885.02/x
  3. Step 3: Cross multiply
    5,122.90x = 7,069.98 × 2,885.02
  4. Step 4: Simplify right side
    5,122.90x = 20,397,033.70
  5. Step 5: Solve for x
    x = 20,397,033.70/5,122.90
  6. Step 6: Final answer
    x = 3,981.54

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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.