Home / 5,259.92-7,889.85-2,139.32

Finding the Fourth Proportional to 5,259.92, 7,889.85 and 2,139.32

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Solution

The fourth proportional to 5,259.92, 7,889.85 and 2,139.32 is: 3,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.92 : 7,889.85 = 2,139.32 : x
  2. Step 2: Convert to fraction form
    5,259.92/7,889.85 = 2,139.32/x
  3. Step 3: Cross multiply
    5,259.92x = 7,889.85 × 2,139.32
  4. Step 4: Simplify right side
    5,259.92x = 16,878,913.90
  5. Step 5: Solve for x
    x = 16,878,913.90/5,259.92
  6. Step 6: Final answer
    x = 3,208.97

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1.5x scale

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.