Home / 8,684.58-11,981.61-5,280.42

Finding the Fourth Proportional to 8,684.58, 11,981.61 and 5,280.42

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Solution

The fourth proportional to 8,684.58, 11,981.61 and 5,280.42 is: 7,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.58 : 11,981.61 = 5,280.42 : x
  2. Step 2: Convert to fraction form
    8,684.58/11,981.61 = 5,280.42/x
  3. Step 3: Cross multiply
    8,684.58x = 11,981.61 × 5,280.42
  4. Step 4: Simplify right side
    8,684.58x = 63,267,933.08
  5. Step 5: Solve for x
    x = 63,267,933.08/8,684.58
  6. Step 6: Final answer
    x = 7,285.09

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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.