Home / 3,979.76-5,497.01-2,806.07

Finding the Fourth Proportional to 3,979.76, 5,497.01 and 2,806.07

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Solution

The fourth proportional to 3,979.76, 5,497.01 and 2,806.07 is: 3,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.76 : 5,497.01 = 2,806.07 : x
  2. Step 2: Convert to fraction form
    3,979.76/5,497.01 = 2,806.07/x
  3. Step 3: Cross multiply
    3,979.76x = 5,497.01 × 2,806.07
  4. Step 4: Simplify right side
    3,979.76x = 15,424,953.34
  5. Step 5: Solve for x
    x = 15,424,953.34/3,979.76
  6. Step 6: Final answer
    x = 3,875.86

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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.