Home / 1,704.79-2,351.19-1,439.84

Finding the Fourth Proportional to 1,704.79, 2,351.19 and 1,439.84

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Solution

The fourth proportional to 1,704.79, 2,351.19 and 1,439.84 is: 1,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,704.79 : 2,351.19 = 1,439.84 : x
  2. Step 2: Convert to fraction form
    1,704.79/2,351.19 = 1,439.84/x
  3. Step 3: Cross multiply
    1,704.79x = 2,351.19 × 1,439.84
  4. Step 4: Simplify right side
    1,704.79x = 3,385,337.41
  5. Step 5: Solve for x
    x = 3,385,337.41/1,704.79
  6. Step 6: Final answer
    x = 1,985.78

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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.