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Finding the Fourth Proportional to 10,161.64, 15,242.46 and 2,865.64

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Solution

The fourth proportional to 10,161.64, 15,242.46 and 2,865.64 is: 4,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.64 : 15,242.46 = 2,865.64 : x
  2. Step 2: Convert to fraction form
    10,161.64/15,242.46 = 2,865.64/x
  3. Step 3: Cross multiply
    10,161.64x = 15,242.46 × 2,865.64
  4. Step 4: Simplify right side
    10,161.64x = 43,679,403.07
  5. Step 5: Solve for x
    x = 43,679,403.07/10,161.64
  6. Step 6: Final answer
    x = 4,298.46

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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.