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Finding the Fourth Proportional to 8,612.68, 12,918.54 and 2,773.48

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Solution

The fourth proportional to 8,612.68, 12,918.54 and 2,773.48 is: 4,160.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.68 : 12,918.54 = 2,773.48 : x
  2. Step 2: Convert to fraction form
    8,612.68/12,918.54 = 2,773.48/x
  3. Step 3: Cross multiply
    8,612.68x = 12,918.54 × 2,773.48
  4. Step 4: Simplify right side
    8,612.68x = 35,829,312.32
  5. Step 5: Solve for x
    x = 35,829,312.32/8,612.68
  6. Step 6: Final answer
    x = 4,160.07

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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.