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Finding the Fourth Proportional to 2,870.93, 3,961.41 and 1,691.84

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Solution

The fourth proportional to 2,870.93, 3,961.41 and 1,691.84 is: 2,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.93 : 3,961.41 = 1,691.84 : x
  2. Step 2: Convert to fraction form
    2,870.93/3,961.41 = 1,691.84/x
  3. Step 3: Cross multiply
    2,870.93x = 3,961.41 × 1,691.84
  4. Step 4: Simplify right side
    2,870.93x = 6,702,081.80
  5. Step 5: Solve for x
    x = 6,702,081.80/2,870.93
  6. Step 6: Final answer
    x = 2,334.46

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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.