Home / 8,235.47-12,351.89-2,390.72

Finding the Fourth Proportional to 8,235.47, 12,351.89 and 2,390.72

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Solution

The fourth proportional to 8,235.47, 12,351.89 and 2,390.72 is: 3,585.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.47 : 12,351.89 = 2,390.72 : x
  2. Step 2: Convert to fraction form
    8,235.47/12,351.89 = 2,390.72/x
  3. Step 3: Cross multiply
    8,235.47x = 12,351.89 × 2,390.72
  4. Step 4: Simplify right side
    8,235.47x = 29,529,854.68
  5. Step 5: Solve for x
    x = 29,529,854.68/8,235.47
  6. Step 6: Final answer
    x = 3,585.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.