Home / 7,019.10-9,687.19-5,129.73

Finding the Fourth Proportional to 7,019.10, 9,687.19 and 5,129.73

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Solution

The fourth proportional to 7,019.10, 9,687.19 and 5,129.73 is: 7,079.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.10 : 9,687.19 = 5,129.73 : x
  2. Step 2: Convert to fraction form
    7,019.10/9,687.19 = 5,129.73/x
  3. Step 3: Cross multiply
    7,019.10x = 9,687.19 × 5,129.73
  4. Step 4: Simplify right side
    7,019.10x = 49,692,669.16
  5. Step 5: Solve for x
    x = 49,692,669.16/7,019.10
  6. Step 6: Final answer
    x = 7,079.64

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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.