Home / 6,511.26-8,979.75-5,111.58

Finding the Fourth Proportional to 6,511.26, 8,979.75 and 5,111.58

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Solution

The fourth proportional to 6,511.26, 8,979.75 and 5,111.58 is: 7,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.26 : 8,979.75 = 5,111.58 : x
  2. Step 2: Convert to fraction form
    6,511.26/8,979.75 = 5,111.58/x
  3. Step 3: Cross multiply
    6,511.26x = 8,979.75 × 5,111.58
  4. Step 4: Simplify right side
    6,511.26x = 45,900,710.51
  5. Step 5: Solve for x
    x = 45,900,710.51/6,511.26
  6. Step 6: Final answer
    x = 7,049.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.