Home / 2,643.20-3,956.70-2,497.40

Finding the Fourth Proportional to 2,643.20, 3,956.70 and 2,497.40

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Solution

The fourth proportional to 2,643.20, 3,956.70 and 2,497.40 is: 3,738.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.20 : 3,956.70 = 2,497.40 : x
  2. Step 2: Convert to fraction form
    2,643.20/3,956.70 = 2,497.40/x
  3. Step 3: Cross multiply
    2,643.20x = 3,956.70 × 2,497.40
  4. Step 4: Simplify right side
    2,643.20x = 9,881,462.58
  5. Step 5: Solve for x
    x = 9,881,462.58/2,643.20
  6. Step 6: Final answer
    x = 3,738.45

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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.