Home / 1,413.36-2,120.58-547.74

Finding the Fourth Proportional to 1,413.36, 2,120.58 and 547.74

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Solution

The fourth proportional to 1,413.36, 2,120.58 and 547.74 is: 821.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.36 : 2,120.58 = 547.74 : x
  2. Step 2: Convert to fraction form
    1,413.36/2,120.58 = 547.74/x
  3. Step 3: Cross multiply
    1,413.36x = 2,120.58 × 547.74
  4. Step 4: Simplify right side
    1,413.36x = 1,161,526.49
  5. Step 5: Solve for x
    x = 1,161,526.49/1,413.36
  6. Step 6: Final answer
    x = 821.82

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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.