Home / 2,489.13-3,733.74-640.26

Finding the Fourth Proportional to 2,489.13, 3,733.74 and 640.26

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Solution

The fourth proportional to 2,489.13, 3,733.74 and 640.26 is: 960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.13 : 3,733.74 = 640.26 : x
  2. Step 2: Convert to fraction form
    2,489.13/3,733.74 = 640.26/x
  3. Step 3: Cross multiply
    2,489.13x = 3,733.74 × 640.26
  4. Step 4: Simplify right side
    2,489.13x = 2,390,564.37
  5. Step 5: Solve for x
    x = 2,390,564.37/2,489.13
  6. Step 6: Final answer
    x = 960.40

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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.