Home / 1,709.40-2,562.42-928.71

Finding the Fourth Proportional to 1,709.40, 2,562.42 and 928.71

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Solution

The fourth proportional to 1,709.40, 2,562.42 and 928.71 is: 1,392.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.40 : 2,562.42 = 928.71 : x
  2. Step 2: Convert to fraction form
    1,709.40/2,562.42 = 928.71/x
  3. Step 3: Cross multiply
    1,709.40x = 2,562.42 × 928.71
  4. Step 4: Simplify right side
    1,709.40x = 2,379,745.08
  5. Step 5: Solve for x
    x = 2,379,745.08/1,709.40
  6. Step 6: Final answer
    x = 1,392.15

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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.