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Finding the Fourth Proportional to 5,640.03, 8,454.12 and 4,981.20

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Solution

The fourth proportional to 5,640.03, 8,454.12 and 4,981.20 is: 7,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.03 : 8,454.12 = 4,981.20 : x
  2. Step 2: Convert to fraction form
    5,640.03/8,454.12 = 4,981.20/x
  3. Step 3: Cross multiply
    5,640.03x = 8,454.12 × 4,981.20
  4. Step 4: Simplify right side
    5,640.03x = 42,111,640.18
  5. Step 5: Solve for x
    x = 42,111,640.18/5,640.03
  6. Step 6: Final answer
    x = 7,466.56

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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.