Home / 1,729.10-2,589.60-1,178.30

Finding the Fourth Proportional to 1,729.10, 2,589.60 and 1,178.30

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Solution

The fourth proportional to 1,729.10, 2,589.60 and 1,178.30 is: 1,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.10 : 2,589.60 = 1,178.30 : x
  2. Step 2: Convert to fraction form
    1,729.10/2,589.60 = 1,178.30/x
  3. Step 3: Cross multiply
    1,729.10x = 2,589.60 × 1,178.30
  4. Step 4: Simplify right side
    1,729.10x = 3,051,325.68
  5. Step 5: Solve for x
    x = 3,051,325.68/1,729.10
  6. Step 6: Final answer
    x = 1,764.69

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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.