Home / 3,686.89-5,089.82-2,845.76

Finding the Fourth Proportional to 3,686.89, 5,089.82 and 2,845.76

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Solution

The fourth proportional to 3,686.89, 5,089.82 and 2,845.76 is: 3,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.89 : 5,089.82 = 2,845.76 : x
  2. Step 2: Convert to fraction form
    3,686.89/5,089.82 = 2,845.76/x
  3. Step 3: Cross multiply
    3,686.89x = 5,089.82 × 2,845.76
  4. Step 4: Simplify right side
    3,686.89x = 14,484,406.16
  5. Step 5: Solve for x
    x = 14,484,406.16/3,686.89
  6. Step 6: Final answer
    x = 3,928.62

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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.