Home / 2,643.28-3,957.55-1,342.01

Finding the Fourth Proportional to 2,643.28, 3,957.55 and 1,342.01

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Solution

The fourth proportional to 2,643.28, 3,957.55 and 1,342.01 is: 2,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.28 : 3,957.55 = 1,342.01 : x
  2. Step 2: Convert to fraction form
    2,643.28/3,957.55 = 1,342.01/x
  3. Step 3: Cross multiply
    2,643.28x = 3,957.55 × 1,342.01
  4. Step 4: Simplify right side
    2,643.28x = 5,311,071.68
  5. Step 5: Solve for x
    x = 5,311,071.68/2,643.28
  6. Step 6: Final answer
    x = 2,009.27

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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.