Home / 6,989.22-9,643.05-4,155.15

Finding the Fourth Proportional to 6,989.22, 9,643.05 and 4,155.15

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Solution

The fourth proportional to 6,989.22, 9,643.05 and 4,155.15 is: 5,732.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.22 : 9,643.05 = 4,155.15 : x
  2. Step 2: Convert to fraction form
    6,989.22/9,643.05 = 4,155.15/x
  3. Step 3: Cross multiply
    6,989.22x = 9,643.05 × 4,155.15
  4. Step 4: Simplify right side
    6,989.22x = 40,068,319.21
  5. Step 5: Solve for x
    x = 40,068,319.21/6,989.22
  6. Step 6: Final answer
    x = 5,732.87

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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.