Home / 2,389.40-3,297.36-1,394.75

Finding the Fourth Proportional to 2,389.40, 3,297.36 and 1,394.75

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Solution

The fourth proportional to 2,389.40, 3,297.36 and 1,394.75 is: 1,924.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.40 : 3,297.36 = 1,394.75 : x
  2. Step 2: Convert to fraction form
    2,389.40/3,297.36 = 1,394.75/x
  3. Step 3: Cross multiply
    2,389.40x = 3,297.36 × 1,394.75
  4. Step 4: Simplify right side
    2,389.40x = 4,598,992.86
  5. Step 5: Solve for x
    x = 4,598,992.86/2,389.40
  6. Step 6: Final answer
    x = 1,924.75

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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.