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Finding the Fourth Proportional to 8,606.04, 12,918.78 and 3,415.56

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Solution

The fourth proportional to 8,606.04, 12,918.78 and 3,415.56 is: 5,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.04 : 12,918.78 = 3,415.56 : x
  2. Step 2: Convert to fraction form
    8,606.04/12,918.78 = 3,415.56/x
  3. Step 3: Cross multiply
    8,606.04x = 12,918.78 × 3,415.56
  4. Step 4: Simplify right side
    8,606.04x = 44,124,868.22
  5. Step 5: Solve for x
    x = 44,124,868.22/8,606.04
  6. Step 6: Final answer
    x = 5,127.20

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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.