Home / 7,884.81-10,872.99-5,760.63

Finding the Fourth Proportional to 7,884.81, 10,872.99 and 5,760.63

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Solution

The fourth proportional to 7,884.81, 10,872.99 and 5,760.63 is: 7,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.81 : 10,872.99 = 5,760.63 : x
  2. Step 2: Convert to fraction form
    7,884.81/10,872.99 = 5,760.63/x
  3. Step 3: Cross multiply
    7,884.81x = 10,872.99 × 5,760.63
  4. Step 4: Simplify right side
    7,884.81x = 62,635,272.38
  5. Step 5: Solve for x
    x = 62,635,272.38/7,884.81
  6. Step 6: Final answer
    x = 7,943.79

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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.