Home / 1,413.11-2,117.61-1,239.35

Finding the Fourth Proportional to 1,413.11, 2,117.61 and 1,239.35

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Solution

The fourth proportional to 1,413.11, 2,117.61 and 1,239.35 is: 1,857.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.11 : 2,117.61 = 1,239.35 : x
  2. Step 2: Convert to fraction form
    1,413.11/2,117.61 = 1,239.35/x
  3. Step 3: Cross multiply
    1,413.11x = 2,117.61 × 1,239.35
  4. Step 4: Simplify right side
    1,413.11x = 2,624,459.95
  5. Step 5: Solve for x
    x = 2,624,459.95/1,413.11
  6. Step 6: Final answer
    x = 1,857.22

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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.