Home / 7,040.72-9,707.36-5,150.78

Finding the Fourth Proportional to 7,040.72, 9,707.36 and 5,150.78

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Solution

The fourth proportional to 7,040.72, 9,707.36 and 5,150.78 is: 7,101.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.72 : 9,707.36 = 5,150.78 : x
  2. Step 2: Convert to fraction form
    7,040.72/9,707.36 = 5,150.78/x
  3. Step 3: Cross multiply
    7,040.72x = 9,707.36 × 5,150.78
  4. Step 4: Simplify right side
    7,040.72x = 50,000,475.74
  5. Step 5: Solve for x
    x = 50,000,475.74/7,040.72
  6. Step 6: Final answer
    x = 7,101.61

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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.