Home / 5,319.46-7,984.10-2,688.81

Finding the Fourth Proportional to 5,319.46, 7,984.10 and 2,688.81

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Solution

The fourth proportional to 5,319.46, 7,984.10 and 2,688.81 is: 4,035.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.46 : 7,984.10 = 2,688.81 : x
  2. Step 2: Convert to fraction form
    5,319.46/7,984.10 = 2,688.81/x
  3. Step 3: Cross multiply
    5,319.46x = 7,984.10 × 2,688.81
  4. Step 4: Simplify right side
    5,319.46x = 21,467,749.61
  5. Step 5: Solve for x
    x = 21,467,749.61/5,319.46
  6. Step 6: Final answer
    x = 4,035.70

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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.