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Finding the Fourth Proportional to 7,255.65, 10,012.71 and 6,660.54

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Solution

The fourth proportional to 7,255.65, 10,012.71 and 6,660.54 is: 9,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,255.65 : 10,012.71 = 6,660.54 : x
  2. Step 2: Convert to fraction form
    7,255.65/10,012.71 = 6,660.54/x
  3. Step 3: Cross multiply
    7,255.65x = 10,012.71 × 6,660.54
  4. Step 4: Simplify right side
    7,255.65x = 66,690,055.46
  5. Step 5: Solve for x
    x = 66,690,055.46/7,255.65
  6. Step 6: Final answer
    x = 9,191.47

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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.