Home / 8,784.39-12,122.75-4,805.42

Finding the Fourth Proportional to 8,784.39, 12,122.75 and 4,805.42

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Solution

The fourth proportional to 8,784.39, 12,122.75 and 4,805.42 is: 6,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.39 : 12,122.75 = 4,805.42 : x
  2. Step 2: Convert to fraction form
    8,784.39/12,122.75 = 4,805.42/x
  3. Step 3: Cross multiply
    8,784.39x = 12,122.75 × 4,805.42
  4. Step 4: Simplify right side
    8,784.39x = 58,254,856.70
  5. Step 5: Solve for x
    x = 58,254,856.70/8,784.39
  6. Step 6: Final answer
    x = 6,631.63

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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.