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Finding the Fourth Proportional to 10,436.68, 15,655.02 and 3,511

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Solution

The fourth proportional to 10,436.68, 15,655.02 and 3,511 is: 5,266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,436.68 : 15,655.02 = 3,511 : x
  2. Step 2: Convert to fraction form
    10,436.68/15,655.02 = 3,511/x
  3. Step 3: Cross multiply
    10,436.68x = 15,655.02 × 3,511
  4. Step 4: Simplify right side
    10,436.68x = 54,964,775.22
  5. Step 5: Solve for x
    x = 54,964,775.22/10,436.68
  6. Step 6: Final answer
    x = 5,266.50

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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.