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Finding the Fourth Proportional to 8,492.40, 12,746.70 and 6,645.60

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Solution

The fourth proportional to 8,492.40, 12,746.70 and 6,645.60 is: 9,974.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,492.40 : 12,746.70 = 6,645.60 : x
  2. Step 2: Convert to fraction form
    8,492.40/12,746.70 = 6,645.60/x
  3. Step 3: Cross multiply
    8,492.40x = 12,746.70 × 6,645.60
  4. Step 4: Simplify right side
    8,492.40x = 84,709,469.52
  5. Step 5: Solve for x
    x = 84,709,469.52/8,492.40
  6. Step 6: Final answer
    x = 9,974.74

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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.