Home / 7,515.87-11,218.29-6,629.43

Finding the Fourth Proportional to 7,515.87, 11,218.29 and 6,629.43

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Solution

The fourth proportional to 7,515.87, 11,218.29 and 6,629.43 is: 9,895.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.87 : 11,218.29 = 6,629.43 : x
  2. Step 2: Convert to fraction form
    7,515.87/11,218.29 = 6,629.43/x
  3. Step 3: Cross multiply
    7,515.87x = 11,218.29 × 6,629.43
  4. Step 4: Simplify right side
    7,515.87x = 74,370,868.27
  5. Step 5: Solve for x
    x = 74,370,868.27/7,515.87
  6. Step 6: Final answer
    x = 9,895.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.