Home / 7,103.05-9,802.25-4,120.66

Finding the Fourth Proportional to 7,103.05, 9,802.25 and 4,120.66

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Solution

The fourth proportional to 7,103.05, 9,802.25 and 4,120.66 is: 5,686.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.05 : 9,802.25 = 4,120.66 : x
  2. Step 2: Convert to fraction form
    7,103.05/9,802.25 = 4,120.66/x
  3. Step 3: Cross multiply
    7,103.05x = 9,802.25 × 4,120.66
  4. Step 4: Simplify right side
    7,103.05x = 40,391,669.87
  5. Step 5: Solve for x
    x = 40,391,669.87/7,103.05
  6. Step 6: Final answer
    x = 5,686.53

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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.