Home / 8,636.20-11,918.82-5,280.52

Finding the Fourth Proportional to 8,636.20, 11,918.82 and 5,280.52

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Solution

The fourth proportional to 8,636.20, 11,918.82 and 5,280.52 is: 7,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.20 : 11,918.82 = 5,280.52 : x
  2. Step 2: Convert to fraction form
    8,636.20/11,918.82 = 5,280.52/x
  3. Step 3: Cross multiply
    8,636.20x = 11,918.82 × 5,280.52
  4. Step 4: Simplify right side
    8,636.20x = 62,937,567.39
  5. Step 5: Solve for x
    x = 62,937,567.39/8,636.20
  6. Step 6: Final answer
    x = 7,287.65

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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.