Home / 1,413.32-2,119.59-426.11

Finding the Fourth Proportional to 1,413.32, 2,119.59 and 426.11

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Solution

The fourth proportional to 1,413.32, 2,119.59 and 426.11 is: 639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.32 : 2,119.59 = 426.11 : x
  2. Step 2: Convert to fraction form
    1,413.32/2,119.59 = 426.11/x
  3. Step 3: Cross multiply
    1,413.32x = 2,119.59 × 426.11
  4. Step 4: Simplify right side
    1,413.32x = 903,167.90
  5. Step 5: Solve for x
    x = 903,167.90/1,413.32
  6. Step 6: Final answer
    x = 639.04

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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.