Home / 10,642.80-15,971.44-3,717.28

Finding the Fourth Proportional to 10,642.80, 15,971.44 and 3,717.28

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Solution

The fourth proportional to 10,642.80, 15,971.44 and 3,717.28 is: 5,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.80 : 15,971.44 = 3,717.28 : x
  2. Step 2: Convert to fraction form
    10,642.80/15,971.44 = 3,717.28/x
  3. Step 3: Cross multiply
    10,642.80x = 15,971.44 × 3,717.28
  4. Step 4: Simplify right side
    10,642.80x = 59,370,314.48
  5. Step 5: Solve for x
    x = 59,370,314.48/10,642.80
  6. Step 6: Final answer
    x = 5,578.45

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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.