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Finding the Fourth Proportional to 1,859.94, 2,788.95 and 982.90

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Solution

The fourth proportional to 1,859.94, 2,788.95 and 982.90 is: 1,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.94 : 2,788.95 = 982.90 : x
  2. Step 2: Convert to fraction form
    1,859.94/2,788.95 = 982.90/x
  3. Step 3: Cross multiply
    1,859.94x = 2,788.95 × 982.90
  4. Step 4: Simplify right side
    1,859.94x = 2,741,258.96
  5. Step 5: Solve for x
    x = 2,741,258.96/1,859.94
  6. Step 6: Final answer
    x = 1,473.84

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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.