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Finding the Fourth Proportional to 2,640.15, 3,957.03 and 1,470.09

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Solution

The fourth proportional to 2,640.15, 3,957.03 and 1,470.09 is: 2,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.15 : 3,957.03 = 1,470.09 : x
  2. Step 2: Convert to fraction form
    2,640.15/3,957.03 = 1,470.09/x
  3. Step 3: Cross multiply
    2,640.15x = 3,957.03 × 1,470.09
  4. Step 4: Simplify right side
    2,640.15x = 5,817,190.23
  5. Step 5: Solve for x
    x = 5,817,190.23/2,640.15
  6. Step 6: Final answer
    x = 2,203.36

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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.