Home / 1,515.25-2,091.55-925.82

Finding the Fourth Proportional to 1,515.25, 2,091.55 and 925.82

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Solution

The fourth proportional to 1,515.25, 2,091.55 and 925.82 is: 1,277.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.25 : 2,091.55 = 925.82 : x
  2. Step 2: Convert to fraction form
    1,515.25/2,091.55 = 925.82/x
  3. Step 3: Cross multiply
    1,515.25x = 2,091.55 × 925.82
  4. Step 4: Simplify right side
    1,515.25x = 1,936,388.36
  5. Step 5: Solve for x
    x = 1,936,388.36/1,515.25
  6. Step 6: Final answer
    x = 1,277.94

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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.