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Finding the Fourth Proportional to 8,628.58, 12,945.03 and 2,705.32

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Solution

The fourth proportional to 8,628.58, 12,945.03 and 2,705.32 is: 4,058.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.58 : 12,945.03 = 2,705.32 : x
  2. Step 2: Convert to fraction form
    8,628.58/12,945.03 = 2,705.32/x
  3. Step 3: Cross multiply
    8,628.58x = 12,945.03 × 2,705.32
  4. Step 4: Simplify right side
    8,628.58x = 35,020,448.56
  5. Step 5: Solve for x
    x = 35,020,448.56/8,628.58
  6. Step 6: Final answer
    x = 4,058.66

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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.