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Finding the Fourth Proportional to 8,609.40, 12,901.78 and 4,903.98

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Solution

The fourth proportional to 8,609.40, 12,901.78 and 4,903.98 is: 7,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.40 : 12,901.78 = 4,903.98 : x
  2. Step 2: Convert to fraction form
    8,609.40/12,901.78 = 4,903.98/x
  3. Step 3: Cross multiply
    8,609.40x = 12,901.78 × 4,903.98
  4. Step 4: Simplify right side
    8,609.40x = 63,270,071.08
  5. Step 5: Solve for x
    x = 63,270,071.08/8,609.40
  6. Step 6: Final answer
    x = 7,348.95

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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.