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Finding the Fourth Proportional to 6,988.86, 9,644.67 and 3,802.20

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Solution

The fourth proportional to 6,988.86, 9,644.67 and 3,802.20 is: 5,247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.86 : 9,644.67 = 3,802.20 : x
  2. Step 2: Convert to fraction form
    6,988.86/9,644.67 = 3,802.20/x
  3. Step 3: Cross multiply
    6,988.86x = 9,644.67 × 3,802.20
  4. Step 4: Simplify right side
    6,988.86x = 36,670,964.27
  5. Step 5: Solve for x
    x = 36,670,964.27/6,988.86
  6. Step 6: Final answer
    x = 5,247.06

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1.5x scale

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.