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Finding the Fourth Proportional to 8,609.30, 12,901.65 and 4,903.70

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Solution

The fourth proportional to 8,609.30, 12,901.65 and 4,903.70 is: 7,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.30 : 12,901.65 = 4,903.70 : x
  2. Step 2: Convert to fraction form
    8,609.30/12,901.65 = 4,903.70/x
  3. Step 3: Cross multiply
    8,609.30x = 12,901.65 × 4,903.70
  4. Step 4: Simplify right side
    8,609.30x = 63,265,821.11
  5. Step 5: Solve for x
    x = 63,265,821.11/8,609.30
  6. Step 6: Final answer
    x = 7,348.54

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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.