Home / 5,166.78-7,130.18-2,808.90

Finding the Fourth Proportional to 5,166.78, 7,130.18 and 2,808.90

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Solution

The fourth proportional to 5,166.78, 7,130.18 and 2,808.90 is: 3,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.78 : 7,130.18 = 2,808.90 : x
  2. Step 2: Convert to fraction form
    5,166.78/7,130.18 = 2,808.90/x
  3. Step 3: Cross multiply
    5,166.78x = 7,130.18 × 2,808.90
  4. Step 4: Simplify right side
    5,166.78x = 20,027,962.60
  5. Step 5: Solve for x
    x = 20,027,962.60/5,166.78
  6. Step 6: Final answer
    x = 3,876.29

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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.