Home / 5,280.75-7,921.53-1,818

Finding the Fourth Proportional to 5,280.75, 7,921.53 and 1,818

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Solution

The fourth proportional to 5,280.75, 7,921.53 and 1,818 is: 2,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.75 : 7,921.53 = 1,818 : x
  2. Step 2: Convert to fraction form
    5,280.75/7,921.53 = 1,818/x
  3. Step 3: Cross multiply
    5,280.75x = 7,921.53 × 1,818
  4. Step 4: Simplify right side
    5,280.75x = 14,401,341.54
  5. Step 5: Solve for x
    x = 14,401,341.54/5,280.75
  6. Step 6: Final answer
    x = 2,727.14

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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.