Home / 2,655.24-3,979.08-1,956.40

Finding the Fourth Proportional to 2,655.24, 3,979.08 and 1,956.40

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Solution

The fourth proportional to 2,655.24, 3,979.08 and 1,956.40 is: 2,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.24 : 3,979.08 = 1,956.40 : x
  2. Step 2: Convert to fraction form
    2,655.24/3,979.08 = 1,956.40/x
  3. Step 3: Cross multiply
    2,655.24x = 3,979.08 × 1,956.40
  4. Step 4: Simplify right side
    2,655.24x = 7,784,672.11
  5. Step 5: Solve for x
    x = 7,784,672.11/2,655.24
  6. Step 6: Final answer
    x = 2,931.81

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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.