Home / 1,394.32-2,081.48-1,297.12

Finding the Fourth Proportional to 1,394.32, 2,081.48 and 1,297.12

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Solution

The fourth proportional to 1,394.32, 2,081.48 and 1,297.12 is: 1,936.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.32 : 2,081.48 = 1,297.12 : x
  2. Step 2: Convert to fraction form
    1,394.32/2,081.48 = 1,297.12/x
  3. Step 3: Cross multiply
    1,394.32x = 2,081.48 × 1,297.12
  4. Step 4: Simplify right side
    1,394.32x = 2,699,929.34
  5. Step 5: Solve for x
    x = 2,699,929.34/1,394.32
  6. Step 6: Final answer
    x = 1,936.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.