Home / 5,118.90-7,064.16-3,129.03

Finding the Fourth Proportional to 5,118.90, 7,064.16 and 3,129.03

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Solution

The fourth proportional to 5,118.90, 7,064.16 and 3,129.03 is: 4,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.90 : 7,064.16 = 3,129.03 : x
  2. Step 2: Convert to fraction form
    5,118.90/7,064.16 = 3,129.03/x
  3. Step 3: Cross multiply
    5,118.90x = 7,064.16 × 3,129.03
  4. Step 4: Simplify right side
    5,118.90x = 22,103,968.56
  5. Step 5: Solve for x
    x = 22,103,968.56/5,118.90
  6. Step 6: Final answer
    x = 4,318.11

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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.