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Finding the Fourth Proportional to 2,976.04, 4,112.04 and 2,870.92

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Solution

The fourth proportional to 2,976.04, 4,112.04 and 2,870.92 is: 3,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.04 : 4,112.04 = 2,870.92 : x
  2. Step 2: Convert to fraction form
    2,976.04/4,112.04 = 2,870.92/x
  3. Step 3: Cross multiply
    2,976.04x = 4,112.04 × 2,870.92
  4. Step 4: Simplify right side
    2,976.04x = 11,805,337.88
  5. Step 5: Solve for x
    x = 11,805,337.88/2,976.04
  6. Step 6: Final answer
    x = 3,966.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.