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Finding the Fourth Proportional to 3,528, 5,309.72 and 2,655.02

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Solution

The fourth proportional to 3,528, 5,309.72 and 2,655.02 is: 3,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528 : 5,309.72 = 2,655.02 : x
  2. Step 2: Convert to fraction form
    3,528/5,309.72 = 2,655.02/x
  3. Step 3: Cross multiply
    3,528x = 5,309.72 × 2,655.02
  4. Step 4: Simplify right side
    3,528x = 14,097,427.73
  5. Step 5: Solve for x
    x = 14,097,427.73/3,528
  6. Step 6: Final answer
    x = 3,995.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.