Home / 2,478.78-3,413.21-2,424.11

Finding the Fourth Proportional to 2,478.78, 3,413.21 and 2,424.11

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Solution

The fourth proportional to 2,478.78, 3,413.21 and 2,424.11 is: 3,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.78 : 3,413.21 = 2,424.11 : x
  2. Step 2: Convert to fraction form
    2,478.78/3,413.21 = 2,424.11/x
  3. Step 3: Cross multiply
    2,478.78x = 3,413.21 × 2,424.11
  4. Step 4: Simplify right side
    2,478.78x = 8,273,967.31
  5. Step 5: Solve for x
    x = 8,273,967.31/2,478.78
  6. Step 6: Final answer
    x = 3,337.92

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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.