Home / 1,443.36-1,985.88-1,274.64

Finding the Fourth Proportional to 1,443.36, 1,985.88 and 1,274.64

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Solution

The fourth proportional to 1,443.36, 1,985.88 and 1,274.64 is: 1,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.36 : 1,985.88 = 1,274.64 : x
  2. Step 2: Convert to fraction form
    1,443.36/1,985.88 = 1,274.64/x
  3. Step 3: Cross multiply
    1,443.36x = 1,985.88 × 1,274.64
  4. Step 4: Simplify right side
    1,443.36x = 2,531,282.08
  5. Step 5: Solve for x
    x = 2,531,282.08/1,443.36
  6. Step 6: Final answer
    x = 1,753.74

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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.