Home / 2,371.40-3,557.10-640.02

Finding the Fourth Proportional to 2,371.40, 3,557.10 and 640.02

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Solution

The fourth proportional to 2,371.40, 3,557.10 and 640.02 is: 960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,371.40 : 3,557.10 = 640.02 : x
  2. Step 2: Convert to fraction form
    2,371.40/3,557.10 = 640.02/x
  3. Step 3: Cross multiply
    2,371.40x = 3,557.10 × 640.02
  4. Step 4: Simplify right side
    2,371.40x = 2,276,622.43
  5. Step 5: Solve for x
    x = 2,276,622.43/2,371.40
  6. Step 6: Final answer
    x = 960.03

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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.