Home / 7,511.40-11,269.50-3,129.32

Finding the Fourth Proportional to 7,511.40, 11,269.50 and 3,129.32

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Solution

The fourth proportional to 7,511.40, 11,269.50 and 3,129.32 is: 4,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,511.40 : 11,269.50 = 3,129.32 : x
  2. Step 2: Convert to fraction form
    7,511.40/11,269.50 = 3,129.32/x
  3. Step 3: Cross multiply
    7,511.40x = 11,269.50 × 3,129.32
  4. Step 4: Simplify right side
    7,511.40x = 35,265,871.74
  5. Step 5: Solve for x
    x = 35,265,871.74/7,511.40
  6. Step 6: Final answer
    x = 4,694.98

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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.