Home / 3,114.90-4,658.85-2,788.20

Finding the Fourth Proportional to 3,114.90, 4,658.85 and 2,788.20

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Solution

The fourth proportional to 3,114.90, 4,658.85 and 2,788.20 is: 4,170.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.90 : 4,658.85 = 2,788.20 : x
  2. Step 2: Convert to fraction form
    3,114.90/4,658.85 = 2,788.20/x
  3. Step 3: Cross multiply
    3,114.90x = 4,658.85 × 2,788.20
  4. Step 4: Simplify right side
    3,114.90x = 12,989,805.57
  5. Step 5: Solve for x
    x = 12,989,805.57/3,114.90
  6. Step 6: Final answer
    x = 4,170.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.