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Finding the Fourth Proportional to 2,802.98, 4,205.16 and 855.08

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Solution

The fourth proportional to 2,802.98, 4,205.16 and 855.08 is: 1,282.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.98 : 4,205.16 = 855.08 : x
  2. Step 2: Convert to fraction form
    2,802.98/4,205.16 = 855.08/x
  3. Step 3: Cross multiply
    2,802.98x = 4,205.16 × 855.08
  4. Step 4: Simplify right side
    2,802.98x = 3,595,748.21
  5. Step 5: Solve for x
    x = 3,595,748.21/2,802.98
  6. Step 6: Final answer
    x = 1,282.83

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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.