Home / 7,120.20-9,827.73-4,135.66

Finding the Fourth Proportional to 7,120.20, 9,827.73 and 4,135.66

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Solution

The fourth proportional to 7,120.20, 9,827.73 and 4,135.66 is: 5,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.20 : 9,827.73 = 4,135.66 : x
  2. Step 2: Convert to fraction form
    7,120.20/9,827.73 = 4,135.66/x
  3. Step 3: Cross multiply
    7,120.20x = 9,827.73 × 4,135.66
  4. Step 4: Simplify right side
    7,120.20x = 40,644,125.28
  5. Step 5: Solve for x
    x = 40,644,125.28/7,120.20
  6. Step 6: Final answer
    x = 5,708.28

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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.