Home / 7,086.79-9,780.29-4,103.66

Finding the Fourth Proportional to 7,086.79, 9,780.29 and 4,103.66

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Solution

The fourth proportional to 7,086.79, 9,780.29 and 4,103.66 is: 5,663.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.79 : 9,780.29 = 4,103.66 : x
  2. Step 2: Convert to fraction form
    7,086.79/9,780.29 = 4,103.66/x
  3. Step 3: Cross multiply
    7,086.79x = 9,780.29 × 4,103.66
  4. Step 4: Simplify right side
    7,086.79x = 40,135,027.27
  5. Step 5: Solve for x
    x = 40,135,027.27/7,086.79
  6. Step 6: Final answer
    x = 5,663.36

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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.