Home / 5,681.94-7,838.38-3,691.77

Finding the Fourth Proportional to 5,681.94, 7,838.38 and 3,691.77

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Solution

The fourth proportional to 5,681.94, 7,838.38 and 3,691.77 is: 5,092.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.94 : 7,838.38 = 3,691.77 : x
  2. Step 2: Convert to fraction form
    5,681.94/7,838.38 = 3,691.77/x
  3. Step 3: Cross multiply
    5,681.94x = 7,838.38 × 3,691.77
  4. Step 4: Simplify right side
    5,681.94x = 28,937,496.13
  5. Step 5: Solve for x
    x = 28,937,496.13/5,681.94
  6. Step 6: Final answer
    x = 5,092.89

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1.5x scale

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.