Home / 5,655.96-7,805.16-3,138.06

Finding the Fourth Proportional to 5,655.96, 7,805.16 and 3,138.06

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Solution

The fourth proportional to 5,655.96, 7,805.16 and 3,138.06 is: 4,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.96 : 7,805.16 = 3,138.06 : x
  2. Step 2: Convert to fraction form
    5,655.96/7,805.16 = 3,138.06/x
  3. Step 3: Cross multiply
    5,655.96x = 7,805.16 × 3,138.06
  4. Step 4: Simplify right side
    5,655.96x = 24,493,060.39
  5. Step 5: Solve for x
    x = 24,493,060.39/5,655.96
  6. Step 6: Final answer
    x = 4,330.49

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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.