Home / 7,965.90-11,947.25-7,570.72

Finding the Fourth Proportional to 7,965.90, 11,947.25 and 7,570.72

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Solution

The fourth proportional to 7,965.90, 11,947.25 and 7,570.72 is: 11,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.90 : 11,947.25 = 7,570.72 : x
  2. Step 2: Convert to fraction form
    7,965.90/11,947.25 = 7,570.72/x
  3. Step 3: Cross multiply
    7,965.90x = 11,947.25 × 7,570.72
  4. Step 4: Simplify right side
    7,965.90x = 90,449,318.38
  5. Step 5: Solve for x
    x = 90,449,318.38/7,965.90
  6. Step 6: Final answer
    x = 11,354.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.