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Finding the Fourth Proportional to 8,873.79, 12,246.44 and 5,147.79

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Solution

The fourth proportional to 8,873.79, 12,246.44 and 5,147.79 is: 7,104.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.79 : 12,246.44 = 5,147.79 : x
  2. Step 2: Convert to fraction form
    8,873.79/12,246.44 = 5,147.79/x
  3. Step 3: Cross multiply
    8,873.79x = 12,246.44 × 5,147.79
  4. Step 4: Simplify right side
    8,873.79x = 63,042,075.63
  5. Step 5: Solve for x
    x = 63,042,075.63/8,873.79
  6. Step 6: Final answer
    x = 7,104.30

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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.