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Finding the Fourth Proportional to 8,606.70, 12,888.45 and 5,669.10

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Solution

The fourth proportional to 8,606.70, 12,888.45 and 5,669.10 is: 8,489.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.70 : 12,888.45 = 5,669.10 : x
  2. Step 2: Convert to fraction form
    8,606.70/12,888.45 = 5,669.10/x
  3. Step 3: Cross multiply
    8,606.70x = 12,888.45 × 5,669.10
  4. Step 4: Simplify right side
    8,606.70x = 73,065,911.90
  5. Step 5: Solve for x
    x = 73,065,911.90/8,606.70
  6. Step 6: Final answer
    x = 8,489.42

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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.