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Finding the Fourth Proportional to 8,859.70, 13,290.99 and 2,620.35

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Solution

The fourth proportional to 8,859.70, 13,290.99 and 2,620.35 is: 3,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.70 : 13,290.99 = 2,620.35 : x
  2. Step 2: Convert to fraction form
    8,859.70/13,290.99 = 2,620.35/x
  3. Step 3: Cross multiply
    8,859.70x = 13,290.99 × 2,620.35
  4. Step 4: Simplify right side
    8,859.70x = 34,827,045.65
  5. Step 5: Solve for x
    x = 34,827,045.65/8,859.70
  6. Step 6: Final answer
    x = 3,930.95

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1.5x scale

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.