Home / 7,065.85-9,750.69-3,879.13

Finding the Fourth Proportional to 7,065.85, 9,750.69 and 3,879.13

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Solution

The fourth proportional to 7,065.85, 9,750.69 and 3,879.13 is: 5,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.85 : 9,750.69 = 3,879.13 : x
  2. Step 2: Convert to fraction form
    7,065.85/9,750.69 = 3,879.13/x
  3. Step 3: Cross multiply
    7,065.85x = 9,750.69 × 3,879.13
  4. Step 4: Simplify right side
    7,065.85x = 37,824,169.72
  5. Step 5: Solve for x
    x = 37,824,169.72/7,065.85
  6. Step 6: Final answer
    x = 5,353.10

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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.