Home / 3,387.45-5,079.64-1,538.49

Finding the Fourth Proportional to 3,387.45, 5,079.64 and 1,538.49

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Solution

The fourth proportional to 3,387.45, 5,079.64 and 1,538.49 is: 2,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.45 : 5,079.64 = 1,538.49 : x
  2. Step 2: Convert to fraction form
    3,387.45/5,079.64 = 1,538.49/x
  3. Step 3: Cross multiply
    3,387.45x = 5,079.64 × 1,538.49
  4. Step 4: Simplify right side
    3,387.45x = 7,814,975.34
  5. Step 5: Solve for x
    x = 7,814,975.34/3,387.45
  6. Step 6: Final answer
    x = 2,307.04

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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.