Home / 5,413.17-8,119.76-1,309.17

Finding the Fourth Proportional to 5,413.17, 8,119.76 and 1,309.17

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Solution

The fourth proportional to 5,413.17, 8,119.76 and 1,309.17 is: 1,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.17 : 8,119.76 = 1,309.17 : x
  2. Step 2: Convert to fraction form
    5,413.17/8,119.76 = 1,309.17/x
  3. Step 3: Cross multiply
    5,413.17x = 8,119.76 × 1,309.17
  4. Step 4: Simplify right side
    5,413.17x = 10,630,139.65
  5. Step 5: Solve for x
    x = 10,630,139.65/5,413.17
  6. Step 6: Final answer
    x = 1,963.76

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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.