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Finding the Fourth Proportional to 2,878.93, 3,973.28 and 1,620.04

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Solution

The fourth proportional to 2,878.93, 3,973.28 and 1,620.04 is: 2,235.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.93 : 3,973.28 = 1,620.04 : x
  2. Step 2: Convert to fraction form
    2,878.93/3,973.28 = 1,620.04/x
  3. Step 3: Cross multiply
    2,878.93x = 3,973.28 × 1,620.04
  4. Step 4: Simplify right side
    2,878.93x = 6,436,854.50
  5. Step 5: Solve for x
    x = 6,436,854.50/2,878.93
  6. Step 6: Final answer
    x = 2,235.85

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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.