Home / 1,525.86-2,105.40-928.23

Finding the Fourth Proportional to 1,525.86, 2,105.40 and 928.23

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Solution

The fourth proportional to 1,525.86, 2,105.40 and 928.23 is: 1,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.86 : 2,105.40 = 928.23 : x
  2. Step 2: Convert to fraction form
    1,525.86/2,105.40 = 928.23/x
  3. Step 3: Cross multiply
    1,525.86x = 2,105.40 × 928.23
  4. Step 4: Simplify right side
    1,525.86x = 1,954,295.44
  5. Step 5: Solve for x
    x = 1,954,295.44/1,525.86
  6. Step 6: Final answer
    x = 1,280.78

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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.