Home / 8,639-11,923.26-6,539.48

Finding the Fourth Proportional to 8,639, 11,923.26 and 6,539.48

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Solution

The fourth proportional to 8,639, 11,923.26 and 6,539.48 is: 9,025.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639 : 11,923.26 = 6,539.48 : x
  2. Step 2: Convert to fraction form
    8,639/11,923.26 = 6,539.48/x
  3. Step 3: Cross multiply
    8,639x = 11,923.26 × 6,539.48
  4. Step 4: Simplify right side
    8,639x = 77,971,920.30
  5. Step 5: Solve for x
    x = 77,971,920.30/8,639
  6. Step 6: Final answer
    x = 9,025.57

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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.