Home / 7,105.14-9,804.51-4,120.83

Finding the Fourth Proportional to 7,105.14, 9,804.51 and 4,120.83

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Solution

The fourth proportional to 7,105.14, 9,804.51 and 4,120.83 is: 5,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.14 : 9,804.51 = 4,120.83 : x
  2. Step 2: Convert to fraction form
    7,105.14/9,804.51 = 4,120.83/x
  3. Step 3: Cross multiply
    7,105.14x = 9,804.51 × 4,120.83
  4. Step 4: Simplify right side
    7,105.14x = 40,402,718.94
  5. Step 5: Solve for x
    x = 40,402,718.94/7,105.14
  6. Step 6: Final answer
    x = 5,686.41

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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.