Home / 7,305.12-10,078.44-4,117.68

Finding the Fourth Proportional to 7,305.12, 10,078.44 and 4,117.68

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Solution

The fourth proportional to 7,305.12, 10,078.44 and 4,117.68 is: 5,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,305.12 : 10,078.44 = 4,117.68 : x
  2. Step 2: Convert to fraction form
    7,305.12/10,078.44 = 4,117.68/x
  3. Step 3: Cross multiply
    7,305.12x = 10,078.44 × 4,117.68
  4. Step 4: Simplify right side
    7,305.12x = 41,499,790.82
  5. Step 5: Solve for x
    x = 41,499,790.82/7,305.12
  6. Step 6: Final answer
    x = 5,680.92

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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.