Home / 1,322.28-1,985.44-1,253.02

Finding the Fourth Proportional to 1,322.28, 1,985.44 and 1,253.02

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Solution

The fourth proportional to 1,322.28, 1,985.44 and 1,253.02 is: 1,881.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.28 : 1,985.44 = 1,253.02 : x
  2. Step 2: Convert to fraction form
    1,322.28/1,985.44 = 1,253.02/x
  3. Step 3: Cross multiply
    1,322.28x = 1,985.44 × 1,253.02
  4. Step 4: Simplify right side
    1,322.28x = 2,487,796.03
  5. Step 5: Solve for x
    x = 2,487,796.03/1,322.28
  6. Step 6: Final answer
    x = 1,881.44

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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.