Home / 10,663.78-15,995.67-2,872.59

Finding the Fourth Proportional to 10,663.78, 15,995.67 and 2,872.59

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Solution

The fourth proportional to 10,663.78, 15,995.67 and 2,872.59 is: 4,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,663.78 : 15,995.67 = 2,872.59 : x
  2. Step 2: Convert to fraction form
    10,663.78/15,995.67 = 2,872.59/x
  3. Step 3: Cross multiply
    10,663.78x = 15,995.67 × 2,872.59
  4. Step 4: Simplify right side
    10,663.78x = 45,949,001.69
  5. Step 5: Solve for x
    x = 45,949,001.69/10,663.78
  6. Step 6: Final answer
    x = 4,308.89

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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.