Home / 6,989.20-9,645.28-3,802.68

Finding the Fourth Proportional to 6,989.20, 9,645.28 and 3,802.68

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Solution

The fourth proportional to 6,989.20, 9,645.28 and 3,802.68 is: 5,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.20 : 9,645.28 = 3,802.68 : x
  2. Step 2: Convert to fraction form
    6,989.20/9,645.28 = 3,802.68/x
  3. Step 3: Cross multiply
    6,989.20x = 9,645.28 × 3,802.68
  4. Step 4: Simplify right side
    6,989.20x = 36,677,913.35
  5. Step 5: Solve for x
    x = 36,677,913.35/6,989.20
  6. Step 6: Final answer
    x = 5,247.80

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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.