Home / 2,334.36-3,221.55-1,389.90

Finding the Fourth Proportional to 2,334.36, 3,221.55 and 1,389.90

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Solution

The fourth proportional to 2,334.36, 3,221.55 and 1,389.90 is: 1,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.36 : 3,221.55 = 1,389.90 : x
  2. Step 2: Convert to fraction form
    2,334.36/3,221.55 = 1,389.90/x
  3. Step 3: Cross multiply
    2,334.36x = 3,221.55 × 1,389.90
  4. Step 4: Simplify right side
    2,334.36x = 4,477,632.35
  5. Step 5: Solve for x
    x = 4,477,632.35/2,334.36
  6. Step 6: Final answer
    x = 1,918.14

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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.