Home / 3,081.16-4,622.56-890.08

Finding the Fourth Proportional to 3,081.16, 4,622.56 and 890.08

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Solution

The fourth proportional to 3,081.16, 4,622.56 and 890.08 is: 1,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.16 : 4,622.56 = 890.08 : x
  2. Step 2: Convert to fraction form
    3,081.16/4,622.56 = 890.08/x
  3. Step 3: Cross multiply
    3,081.16x = 4,622.56 × 890.08
  4. Step 4: Simplify right side
    3,081.16x = 4,114,448.20
  5. Step 5: Solve for x
    x = 4,114,448.20/3,081.16
  6. Step 6: Final answer
    x = 1,335.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.