Home / 1,356.09-1,867.91-1,265.37

Finding the Fourth Proportional to 1,356.09, 1,867.91 and 1,265.37

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Solution

The fourth proportional to 1,356.09, 1,867.91 and 1,265.37 is: 1,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.09 : 1,867.91 = 1,265.37 : x
  2. Step 2: Convert to fraction form
    1,356.09/1,867.91 = 1,265.37/x
  3. Step 3: Cross multiply
    1,356.09x = 1,867.91 × 1,265.37
  4. Step 4: Simplify right side
    1,356.09x = 2,363,590.95
  5. Step 5: Solve for x
    x = 2,363,590.95/1,356.09
  6. Step 6: Final answer
    x = 1,742.95

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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.