Home / 1,994.30-2,989.65-1,301.30

Finding the Fourth Proportional to 1,994.30, 2,989.65 and 1,301.30

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Solution

The fourth proportional to 1,994.30, 2,989.65 and 1,301.30 is: 1,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.30 : 2,989.65 = 1,301.30 : x
  2. Step 2: Convert to fraction form
    1,994.30/2,989.65 = 1,301.30/x
  3. Step 3: Cross multiply
    1,994.30x = 2,989.65 × 1,301.30
  4. Step 4: Simplify right side
    1,994.30x = 3,890,431.55
  5. Step 5: Solve for x
    x = 3,890,431.55/1,994.30
  6. Step 6: Final answer
    x = 1,950.78

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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.