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Finding the Fourth Proportional to 2,971.04, 4,456.52 and 919.04

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Solution

The fourth proportional to 2,971.04, 4,456.52 and 919.04 is: 1,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.04 : 4,456.52 = 919.04 : x
  2. Step 2: Convert to fraction form
    2,971.04/4,456.52 = 919.04/x
  3. Step 3: Cross multiply
    2,971.04x = 4,456.52 × 919.04
  4. Step 4: Simplify right side
    2,971.04x = 4,095,720.14
  5. Step 5: Solve for x
    x = 4,095,720.14/2,971.04
  6. Step 6: Final answer
    x = 1,378.55

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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.