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Finding the Fourth Proportional to 3,561, 4,903.32 and 3,156.88

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Solution

The fourth proportional to 3,561, 4,903.32 and 3,156.88 is: 4,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561 : 4,903.32 = 3,156.88 : x
  2. Step 2: Convert to fraction form
    3,561/4,903.32 = 3,156.88/x
  3. Step 3: Cross multiply
    3,561x = 4,903.32 × 3,156.88
  4. Step 4: Simplify right side
    3,561x = 15,479,192.84
  5. Step 5: Solve for x
    x = 15,479,192.84/3,561
  6. Step 6: Final answer
    x = 4,346.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.