Home / 4,979.11-6,871.20-2,740.92

Finding the Fourth Proportional to 4,979.11, 6,871.20 and 2,740.92

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Solution

The fourth proportional to 4,979.11, 6,871.20 and 2,740.92 is: 3,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.11 : 6,871.20 = 2,740.92 : x
  2. Step 2: Convert to fraction form
    4,979.11/6,871.20 = 2,740.92/x
  3. Step 3: Cross multiply
    4,979.11x = 6,871.20 × 2,740.92
  4. Step 4: Simplify right side
    4,979.11x = 18,833,409.50
  5. Step 5: Solve for x
    x = 18,833,409.50/4,979.11
  6. Step 6: Final answer
    x = 3,782.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.