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Finding the Fourth Proportional to 8,605.74, 12,908.61 and 7,063.50

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Solution

The fourth proportional to 8,605.74, 12,908.61 and 7,063.50 is: 10,595.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.74 : 12,908.61 = 7,063.50 : x
  2. Step 2: Convert to fraction form
    8,605.74/12,908.61 = 7,063.50/x
  3. Step 3: Cross multiply
    8,605.74x = 12,908.61 × 7,063.50
  4. Step 4: Simplify right side
    8,605.74x = 91,179,966.74
  5. Step 5: Solve for x
    x = 91,179,966.74/8,605.74
  6. Step 6: Final answer
    x = 10,595.25

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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.