Home / 3,889.30-5,363.63-2,560.70

Finding the Fourth Proportional to 3,889.30, 5,363.63 and 2,560.70

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Solution

The fourth proportional to 3,889.30, 5,363.63 and 2,560.70 is: 3,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.30 : 5,363.63 = 2,560.70 : x
  2. Step 2: Convert to fraction form
    3,889.30/5,363.63 = 2,560.70/x
  3. Step 3: Cross multiply
    3,889.30x = 5,363.63 × 2,560.70
  4. Step 4: Simplify right side
    3,889.30x = 13,734,647.34
  5. Step 5: Solve for x
    x = 13,734,647.34/3,889.30
  6. Step 6: Final answer
    x = 3,531.39

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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.