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Finding the Fourth Proportional to 8,959.82, 12,364.46 and 4,980.84

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Solution

The fourth proportional to 8,959.82, 12,364.46 and 4,980.84 is: 6,873.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.82 : 12,364.46 = 4,980.84 : x
  2. Step 2: Convert to fraction form
    8,959.82/12,364.46 = 4,980.84/x
  3. Step 3: Cross multiply
    8,959.82x = 12,364.46 × 4,980.84
  4. Step 4: Simplify right side
    8,959.82x = 61,585,396.95
  5. Step 5: Solve for x
    x = 61,585,396.95/8,959.82
  6. Step 6: Final answer
    x = 6,873.51

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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.