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Finding the Fourth Proportional to 8,486.90, 12,730.35 and 2,246.90

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Solution

The fourth proportional to 8,486.90, 12,730.35 and 2,246.90 is: 3,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.90 : 12,730.35 = 2,246.90 : x
  2. Step 2: Convert to fraction form
    8,486.90/12,730.35 = 2,246.90/x
  3. Step 3: Cross multiply
    8,486.90x = 12,730.35 × 2,246.90
  4. Step 4: Simplify right side
    8,486.90x = 28,603,823.42
  5. Step 5: Solve for x
    x = 28,603,823.42/8,486.90
  6. Step 6: Final answer
    x = 3,370.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.