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Finding the Fourth Proportional to 8,784.10, 12,122.06 and 4,805.22

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Solution

The fourth proportional to 8,784.10, 12,122.06 and 4,805.22 is: 6,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.10 : 12,122.06 = 4,805.22 : x
  2. Step 2: Convert to fraction form
    8,784.10/12,122.06 = 4,805.22/x
  3. Step 3: Cross multiply
    8,784.10x = 12,122.06 × 4,805.22
  4. Step 4: Simplify right side
    8,784.10x = 58,249,165.15
  5. Step 5: Solve for x
    x = 58,249,165.15/8,784.10
  6. Step 6: Final answer
    x = 6,631.20

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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.