Home / 1,640.34-2,460.87-486.18

Finding the Fourth Proportional to 1,640.34, 2,460.87 and 486.18

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Solution

The fourth proportional to 1,640.34, 2,460.87 and 486.18 is: 729.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.34 : 2,460.87 = 486.18 : x
  2. Step 2: Convert to fraction form
    1,640.34/2,460.87 = 486.18/x
  3. Step 3: Cross multiply
    1,640.34x = 2,460.87 × 486.18
  4. Step 4: Simplify right side
    1,640.34x = 1,196,425.78
  5. Step 5: Solve for x
    x = 1,196,425.78/1,640.34
  6. Step 6: Final answer
    x = 729.38

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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.