Home / 5,213.63-7,820.49-1,318.04

Finding the Fourth Proportional to 5,213.63, 7,820.49 and 1,318.04

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Solution

The fourth proportional to 5,213.63, 7,820.49 and 1,318.04 is: 1,977.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.63 : 7,820.49 = 1,318.04 : x
  2. Step 2: Convert to fraction form
    5,213.63/7,820.49 = 1,318.04/x
  3. Step 3: Cross multiply
    5,213.63x = 7,820.49 × 1,318.04
  4. Step 4: Simplify right side
    5,213.63x = 10,307,718.64
  5. Step 5: Solve for x
    x = 10,307,718.64/5,213.63
  6. Step 6: Final answer
    x = 1,977.07

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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.