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Finding the Fourth Proportional to 1,867.99, 2,799.55 and 828.29

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Solution

The fourth proportional to 1,867.99, 2,799.55 and 828.29 is: 1,241.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.99 : 2,799.55 = 828.29 : x
  2. Step 2: Convert to fraction form
    1,867.99/2,799.55 = 828.29/x
  3. Step 3: Cross multiply
    1,867.99x = 2,799.55 × 828.29
  4. Step 4: Simplify right side
    1,867.99x = 2,318,821.13
  5. Step 5: Solve for x
    x = 2,318,821.13/1,867.99
  6. Step 6: Final answer
    x = 1,241.35

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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.