Home / 8,815.98-13,220.58-2,891.43

Finding the Fourth Proportional to 8,815.98, 13,220.58 and 2,891.43

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Solution

The fourth proportional to 8,815.98, 13,220.58 and 2,891.43 is: 4,336.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.98 : 13,220.58 = 2,891.43 : x
  2. Step 2: Convert to fraction form
    8,815.98/13,220.58 = 2,891.43/x
  3. Step 3: Cross multiply
    8,815.98x = 13,220.58 × 2,891.43
  4. Step 4: Simplify right side
    8,815.98x = 38,226,381.63
  5. Step 5: Solve for x
    x = 38,226,381.63/8,815.98
  6. Step 6: Final answer
    x = 4,336.03

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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.