Home / 5,108.12-7,655.64-2,642.48

Finding the Fourth Proportional to 5,108.12, 7,655.64 and 2,642.48

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Solution

The fourth proportional to 5,108.12, 7,655.64 and 2,642.48 is: 3,960.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.12 : 7,655.64 = 2,642.48 : x
  2. Step 2: Convert to fraction form
    5,108.12/7,655.64 = 2,642.48/x
  3. Step 3: Cross multiply
    5,108.12x = 7,655.64 × 2,642.48
  4. Step 4: Simplify right side
    5,108.12x = 20,229,875.59
  5. Step 5: Solve for x
    x = 20,229,875.59/5,108.12
  6. Step 6: Final answer
    x = 3,960.34

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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.