Home / 3,853.61-5,776.88-1,387.83

Finding the Fourth Proportional to 3,853.61, 5,776.88 and 1,387.83

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Solution

The fourth proportional to 3,853.61, 5,776.88 and 1,387.83 is: 2,080.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.61 : 5,776.88 = 1,387.83 : x
  2. Step 2: Convert to fraction form
    3,853.61/5,776.88 = 1,387.83/x
  3. Step 3: Cross multiply
    3,853.61x = 5,776.88 × 1,387.83
  4. Step 4: Simplify right side
    3,853.61x = 8,017,320.43
  5. Step 5: Solve for x
    x = 8,017,320.43/3,853.61
  6. Step 6: Final answer
    x = 2,080.47

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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.