Home / 2,489.02-3,733.49-640.12

Finding the Fourth Proportional to 2,489.02, 3,733.49 and 640.12

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Solution

The fourth proportional to 2,489.02, 3,733.49 and 640.12 is: 960.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.02 : 3,733.49 = 640.12 : x
  2. Step 2: Convert to fraction form
    2,489.02/3,733.49 = 640.12/x
  3. Step 3: Cross multiply
    2,489.02x = 3,733.49 × 640.12
  4. Step 4: Simplify right side
    2,489.02x = 2,389,881.62
  5. Step 5: Solve for x
    x = 2,389,881.62/2,489.02
  6. Step 6: Final answer
    x = 960.17

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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.