Home / 6,988.78-10,481.28-2,603.80

Finding the Fourth Proportional to 6,988.78, 10,481.28 and 2,603.80

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Solution

The fourth proportional to 6,988.78, 10,481.28 and 2,603.80 is: 3,905.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.78 : 10,481.28 = 2,603.80 : x
  2. Step 2: Convert to fraction form
    6,988.78/10,481.28 = 2,603.80/x
  3. Step 3: Cross multiply
    6,988.78x = 10,481.28 × 2,603.80
  4. Step 4: Simplify right side
    6,988.78x = 27,291,156.86
  5. Step 5: Solve for x
    x = 27,291,156.86/6,988.78
  6. Step 6: Final answer
    x = 3,905.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.