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Finding the Fourth Proportional to 7,422.68, 10,242.99 and 4,065.41

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Solution

The fourth proportional to 7,422.68, 10,242.99 and 4,065.41 is: 5,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.68 : 10,242.99 = 4,065.41 : x
  2. Step 2: Convert to fraction form
    7,422.68/10,242.99 = 4,065.41/x
  3. Step 3: Cross multiply
    7,422.68x = 10,242.99 × 4,065.41
  4. Step 4: Simplify right side
    7,422.68x = 41,641,953.98
  5. Step 5: Solve for x
    x = 41,641,953.98/7,422.68
  6. Step 6: Final answer
    x = 5,610.10

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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.