Home / 3,389.45-5,081.43-1,440.28

Finding the Fourth Proportional to 3,389.45, 5,081.43 and 1,440.28

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Solution

The fourth proportional to 3,389.45, 5,081.43 and 1,440.28 is: 2,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.45 : 5,081.43 = 1,440.28 : x
  2. Step 2: Convert to fraction form
    3,389.45/5,081.43 = 1,440.28/x
  3. Step 3: Cross multiply
    3,389.45x = 5,081.43 × 1,440.28
  4. Step 4: Simplify right side
    3,389.45x = 7,318,693.75
  5. Step 5: Solve for x
    x = 7,318,693.75/3,389.45
  6. Step 6: Final answer
    x = 2,159.26

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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.