Home / 5,158.12-7,116.48-2,919.76

Finding the Fourth Proportional to 5,158.12, 7,116.48 and 2,919.76

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Solution

The fourth proportional to 5,158.12, 7,116.48 and 2,919.76 is: 4,028.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.12 : 7,116.48 = 2,919.76 : x
  2. Step 2: Convert to fraction form
    5,158.12/7,116.48 = 2,919.76/x
  3. Step 3: Cross multiply
    5,158.12x = 7,116.48 × 2,919.76
  4. Step 4: Simplify right side
    5,158.12x = 20,778,413.64
  5. Step 5: Solve for x
    x = 20,778,413.64/5,158.12
  6. Step 6: Final answer
    x = 4,028.29

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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.