Home / 5,211.10-7,816.68-1,315.54

Finding the Fourth Proportional to 5,211.10, 7,816.68 and 1,315.54

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Solution

The fourth proportional to 5,211.10, 7,816.68 and 1,315.54 is: 1,973.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.10 : 7,816.68 = 1,315.54 : x
  2. Step 2: Convert to fraction form
    5,211.10/7,816.68 = 1,315.54/x
  3. Step 3: Cross multiply
    5,211.10x = 7,816.68 × 1,315.54
  4. Step 4: Simplify right side
    5,211.10x = 10,283,155.21
  5. Step 5: Solve for x
    x = 10,283,155.21/5,211.10
  6. Step 6: Final answer
    x = 1,973.32

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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.