Home / 1,322.28-1,985.74-1,270.04

Finding the Fourth Proportional to 1,322.28, 1,985.74 and 1,270.04

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Solution

The fourth proportional to 1,322.28, 1,985.74 and 1,270.04 is: 1,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.28 : 1,985.74 = 1,270.04 : x
  2. Step 2: Convert to fraction form
    1,322.28/1,985.74 = 1,270.04/x
  3. Step 3: Cross multiply
    1,322.28x = 1,985.74 × 1,270.04
  4. Step 4: Simplify right side
    1,322.28x = 2,521,969.23
  5. Step 5: Solve for x
    x = 2,521,969.23/1,322.28
  6. Step 6: Final answer
    x = 1,907.29

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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.