Home / 3,029.80-4,538.36-1,387.76

Finding the Fourth Proportional to 3,029.80, 4,538.36 and 1,387.76

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Solution

The fourth proportional to 3,029.80, 4,538.36 and 1,387.76 is: 2,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,029.80 : 4,538.36 = 1,387.76 : x
  2. Step 2: Convert to fraction form
    3,029.80/4,538.36 = 1,387.76/x
  3. Step 3: Cross multiply
    3,029.80x = 4,538.36 × 1,387.76
  4. Step 4: Simplify right side
    3,029.80x = 6,298,154.47
  5. Step 5: Solve for x
    x = 6,298,154.47/3,029.80
  6. Step 6: Final answer
    x = 2,078.74

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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.