Home / 5,901.22-8,138.37-4,909.78

Finding the Fourth Proportional to 5,901.22, 8,138.37 and 4,909.78

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Solution

The fourth proportional to 5,901.22, 8,138.37 and 4,909.78 is: 6,771.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,901.22 : 8,138.37 = 4,909.78 : x
  2. Step 2: Convert to fraction form
    5,901.22/8,138.37 = 4,909.78/x
  3. Step 3: Cross multiply
    5,901.22x = 8,138.37 × 4,909.78
  4. Step 4: Simplify right side
    5,901.22x = 39,957,606.26
  5. Step 5: Solve for x
    x = 39,957,606.26/5,901.22
  6. Step 6: Final answer
    x = 6,771.08

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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.