Home / 5,216.43-7,824.93-1,320.87

Finding the Fourth Proportional to 5,216.43, 7,824.93 and 1,320.87

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Solution

The fourth proportional to 5,216.43, 7,824.93 and 1,320.87 is: 1,981.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.43 : 7,824.93 = 1,320.87 : x
  2. Step 2: Convert to fraction form
    5,216.43/7,824.93 = 1,320.87/x
  3. Step 3: Cross multiply
    5,216.43x = 7,824.93 × 1,320.87
  4. Step 4: Simplify right side
    5,216.43x = 10,335,715.29
  5. Step 5: Solve for x
    x = 10,335,715.29/5,216.43
  6. Step 6: Final answer
    x = 1,981.38

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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.