Home / 3,640.05-5,460.57-1,418.45

Finding the Fourth Proportional to 3,640.05, 5,460.57 and 1,418.45

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Solution

The fourth proportional to 3,640.05, 5,460.57 and 1,418.45 is: 2,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.05 : 5,460.57 = 1,418.45 : x
  2. Step 2: Convert to fraction form
    3,640.05/5,460.57 = 1,418.45/x
  3. Step 3: Cross multiply
    3,640.05x = 5,460.57 × 1,418.45
  4. Step 4: Simplify right side
    3,640.05x = 7,745,518.21
  5. Step 5: Solve for x
    x = 7,745,518.21/3,640.05
  6. Step 6: Final answer
    x = 2,127.86

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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.