Home / 7,039.12-9,713.37-3,895.15

Finding the Fourth Proportional to 7,039.12, 9,713.37 and 3,895.15

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Solution

The fourth proportional to 7,039.12, 9,713.37 and 3,895.15 is: 5,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.12 : 9,713.37 = 3,895.15 : x
  2. Step 2: Convert to fraction form
    7,039.12/9,713.37 = 3,895.15/x
  3. Step 3: Cross multiply
    7,039.12x = 9,713.37 × 3,895.15
  4. Step 4: Simplify right side
    7,039.12x = 37,835,033.16
  5. Step 5: Solve for x
    x = 37,835,033.16/7,039.12
  6. Step 6: Final answer
    x = 5,374.97

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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.