Home / 3,875.79-5,339.18-2,879.34

Finding the Fourth Proportional to 3,875.79, 5,339.18 and 2,879.34

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Solution

The fourth proportional to 3,875.79, 5,339.18 and 2,879.34 is: 3,966.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.79 : 5,339.18 = 2,879.34 : x
  2. Step 2: Convert to fraction form
    3,875.79/5,339.18 = 2,879.34/x
  3. Step 3: Cross multiply
    3,875.79x = 5,339.18 × 2,879.34
  4. Step 4: Simplify right side
    3,875.79x = 15,373,314.54
  5. Step 5: Solve for x
    x = 15,373,314.54/3,875.79
  6. Step 6: Final answer
    x = 3,966.50

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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.