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Finding the Fourth Proportional to 3,955.61, 5,459.02 and 2,187.23

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Solution

The fourth proportional to 3,955.61, 5,459.02 and 2,187.23 is: 3,018.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.61 : 5,459.02 = 2,187.23 : x
  2. Step 2: Convert to fraction form
    3,955.61/5,459.02 = 2,187.23/x
  3. Step 3: Cross multiply
    3,955.61x = 5,459.02 × 2,187.23
  4. Step 4: Simplify right side
    3,955.61x = 11,940,099.55
  5. Step 5: Solve for x
    x = 11,940,099.55/3,955.61
  6. Step 6: Final answer
    x = 3,018.52

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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.