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Finding the Fourth Proportional to 6,985.78, 10,484.13 and 2,603.48

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Solution

The fourth proportional to 6,985.78, 10,484.13 and 2,603.48 is: 3,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.78 : 10,484.13 = 2,603.48 : x
  2. Step 2: Convert to fraction form
    6,985.78/10,484.13 = 2,603.48/x
  3. Step 3: Cross multiply
    6,985.78x = 10,484.13 × 2,603.48
  4. Step 4: Simplify right side
    6,985.78x = 27,295,180.11
  5. Step 5: Solve for x
    x = 27,295,180.11/6,985.78
  6. Step 6: Final answer
    x = 3,907.25

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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.