Home / 6,985.76-9,640-3,841.44

Finding the Fourth Proportional to 6,985.76, 9,640 and 3,841.44

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Solution

The fourth proportional to 6,985.76, 9,640 and 3,841.44 is: 5,301.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.76 : 9,640 = 3,841.44 : x
  2. Step 2: Convert to fraction form
    6,985.76/9,640 = 3,841.44/x
  3. Step 3: Cross multiply
    6,985.76x = 9,640 × 3,841.44
  4. Step 4: Simplify right side
    6,985.76x = 37,031,481.60
  5. Step 5: Solve for x
    x = 37,031,481.60/6,985.76
  6. Step 6: Final answer
    x = 5,301.00

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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.