Home / 1,709.16-2,561.20-928.48

Finding the Fourth Proportional to 1,709.16, 2,561.20 and 928.48

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Solution

The fourth proportional to 1,709.16, 2,561.20 and 928.48 is: 1,391.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.16 : 2,561.20 = 928.48 : x
  2. Step 2: Convert to fraction form
    1,709.16/2,561.20 = 928.48/x
  3. Step 3: Cross multiply
    1,709.16x = 2,561.20 × 928.48
  4. Step 4: Simplify right side
    1,709.16x = 2,378,022.98
  5. Step 5: Solve for x
    x = 2,378,022.98/1,709.16
  6. Step 6: Final answer
    x = 1,391.34

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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.