Home / 3,962.80-5,945.28-1,330.75

Finding the Fourth Proportional to 3,962.80, 5,945.28 and 1,330.75

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Solution

The fourth proportional to 3,962.80, 5,945.28 and 1,330.75 is: 1,996.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,962.80 : 5,945.28 = 1,330.75 : x
  2. Step 2: Convert to fraction form
    3,962.80/5,945.28 = 1,330.75/x
  3. Step 3: Cross multiply
    3,962.80x = 5,945.28 × 1,330.75
  4. Step 4: Simplify right side
    3,962.80x = 7,911,681.36
  5. Step 5: Solve for x
    x = 7,911,681.36/3,962.80
  6. Step 6: Final answer
    x = 1,996.49

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1.5x scale

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.