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Finding the Fourth Proportional to 2,978.34, 4,466.75 and 1,003.66

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Solution

The fourth proportional to 2,978.34, 4,466.75 and 1,003.66 is: 1,505.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978.34 : 4,466.75 = 1,003.66 : x
  2. Step 2: Convert to fraction form
    2,978.34/4,466.75 = 1,003.66/x
  3. Step 3: Cross multiply
    2,978.34x = 4,466.75 × 1,003.66
  4. Step 4: Simplify right side
    2,978.34x = 4,483,082.12
  5. Step 5: Solve for x
    x = 4,483,082.12/2,978.34
  6. Step 6: Final answer
    x = 1,505.23

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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.