Home / 6,278.24-9,417.68-2,118.40

Finding the Fourth Proportional to 6,278.24, 9,417.68 and 2,118.40

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Solution

The fourth proportional to 6,278.24, 9,417.68 and 2,118.40 is: 3,177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.24 : 9,417.68 = 2,118.40 : x
  2. Step 2: Convert to fraction form
    6,278.24/9,417.68 = 2,118.40/x
  3. Step 3: Cross multiply
    6,278.24x = 9,417.68 × 2,118.40
  4. Step 4: Simplify right side
    6,278.24x = 19,950,413.31
  5. Step 5: Solve for x
    x = 19,950,413.31/6,278.24
  6. Step 6: Final answer
    x = 3,177.71

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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.