Home / 6,543.69-9,815.36-2,101.32

Finding the Fourth Proportional to 6,543.69, 9,815.36 and 2,101.32

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Solution

The fourth proportional to 6,543.69, 9,815.36 and 2,101.32 is: 3,151.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,543.69 : 9,815.36 = 2,101.32 : x
  2. Step 2: Convert to fraction form
    6,543.69/9,815.36 = 2,101.32/x
  3. Step 3: Cross multiply
    6,543.69x = 9,815.36 × 2,101.32
  4. Step 4: Simplify right side
    6,543.69x = 20,625,201.77
  5. Step 5: Solve for x
    x = 20,625,201.77/6,543.69
  6. Step 6: Final answer
    x = 3,151.92

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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.