Home / 5,114.20-7,665.90-2,918.20

Finding the Fourth Proportional to 5,114.20, 7,665.90 and 2,918.20

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Solution

The fourth proportional to 5,114.20, 7,665.90 and 2,918.20 is: 4,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.20 : 7,665.90 = 2,918.20 : x
  2. Step 2: Convert to fraction form
    5,114.20/7,665.90 = 2,918.20/x
  3. Step 3: Cross multiply
    5,114.20x = 7,665.90 × 2,918.20
  4. Step 4: Simplify right side
    5,114.20x = 22,370,629.38
  5. Step 5: Solve for x
    x = 22,370,629.38/5,114.20
  6. Step 6: Final answer
    x = 4,374.22

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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.