Home / 1,555.30-2,146.75-925.63

Finding the Fourth Proportional to 1,555.30, 2,146.75 and 925.63

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Solution

The fourth proportional to 1,555.30, 2,146.75 and 925.63 is: 1,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.30 : 2,146.75 = 925.63 : x
  2. Step 2: Convert to fraction form
    1,555.30/2,146.75 = 925.63/x
  3. Step 3: Cross multiply
    1,555.30x = 2,146.75 × 925.63
  4. Step 4: Simplify right side
    1,555.30x = 1,987,093.73
  5. Step 5: Solve for x
    x = 1,987,093.73/1,555.30
  6. Step 6: Final answer
    x = 1,277.63

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Half scale
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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.