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Finding the Fourth Proportional to 10,612.04, 15,918.42 and 2,820.86

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Solution

The fourth proportional to 10,612.04, 15,918.42 and 2,820.86 is: 4,231.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,612.04 : 15,918.42 = 2,820.86 : x
  2. Step 2: Convert to fraction form
    10,612.04/15,918.42 = 2,820.86/x
  3. Step 3: Cross multiply
    10,612.04x = 15,918.42 × 2,820.86
  4. Step 4: Simplify right side
    10,612.04x = 44,903,634.24
  5. Step 5: Solve for x
    x = 44,903,634.24/10,612.04
  6. Step 6: Final answer
    x = 4,231.39

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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.