Home / 7,875.16-11,815.44-2,684.68

Finding the Fourth Proportional to 7,875.16, 11,815.44 and 2,684.68

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Solution

The fourth proportional to 7,875.16, 11,815.44 and 2,684.68 is: 4,027.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.16 : 11,815.44 = 2,684.68 : x
  2. Step 2: Convert to fraction form
    7,875.16/11,815.44 = 2,684.68/x
  3. Step 3: Cross multiply
    7,875.16x = 11,815.44 × 2,684.68
  4. Step 4: Simplify right side
    7,875.16x = 31,720,675.46
  5. Step 5: Solve for x
    x = 31,720,675.46/7,875.16
  6. Step 6: Final answer
    x = 4,027.94

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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.