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Finding the Fourth Proportional to 8,980.92, 12,393.45 and 4,947.84

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Solution

The fourth proportional to 8,980.92, 12,393.45 and 4,947.84 is: 6,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.92 : 12,393.45 = 4,947.84 : x
  2. Step 2: Convert to fraction form
    8,980.92/12,393.45 = 4,947.84/x
  3. Step 3: Cross multiply
    8,980.92x = 12,393.45 × 4,947.84
  4. Step 4: Simplify right side
    8,980.92x = 61,320,807.65
  5. Step 5: Solve for x
    x = 61,320,807.65/8,980.92
  6. Step 6: Final answer
    x = 6,827.90

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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.