Home / 7,116.80-9,820.43-4,132.05

Finding the Fourth Proportional to 7,116.80, 9,820.43 and 4,132.05

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Solution

The fourth proportional to 7,116.80, 9,820.43 and 4,132.05 is: 5,701.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.80 : 9,820.43 = 4,132.05 : x
  2. Step 2: Convert to fraction form
    7,116.80/9,820.43 = 4,132.05/x
  3. Step 3: Cross multiply
    7,116.80x = 9,820.43 × 4,132.05
  4. Step 4: Simplify right side
    7,116.80x = 40,578,477.41
  5. Step 5: Solve for x
    x = 40,578,477.41/7,116.80
  6. Step 6: Final answer
    x = 5,701.79

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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.