Home / 5,119.16-7,680.18-1,656.68

Finding the Fourth Proportional to 5,119.16, 7,680.18 and 1,656.68

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Solution

The fourth proportional to 5,119.16, 7,680.18 and 1,656.68 is: 2,485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.16 : 7,680.18 = 1,656.68 : x
  2. Step 2: Convert to fraction form
    5,119.16/7,680.18 = 1,656.68/x
  3. Step 3: Cross multiply
    5,119.16x = 7,680.18 × 1,656.68
  4. Step 4: Simplify right side
    5,119.16x = 12,723,600.60
  5. Step 5: Solve for x
    x = 12,723,600.60/5,119.16
  6. Step 6: Final answer
    x = 2,485.49

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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.