Home / 3,923.11-5,413.93-2,154.76

Finding the Fourth Proportional to 3,923.11, 5,413.93 and 2,154.76

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Solution

The fourth proportional to 3,923.11, 5,413.93 and 2,154.76 is: 2,973.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.11 : 5,413.93 = 2,154.76 : x
  2. Step 2: Convert to fraction form
    3,923.11/5,413.93 = 2,154.76/x
  3. Step 3: Cross multiply
    3,923.11x = 5,413.93 × 2,154.76
  4. Step 4: Simplify right side
    3,923.11x = 11,665,700.89
  5. Step 5: Solve for x
    x = 11,665,700.89/3,923.11
  6. Step 6: Final answer
    x = 2,973.58

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Half scale
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Double scale
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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.