Home / 3,991.17-5,506.47-2,665.74

Finding the Fourth Proportional to 3,991.17, 5,506.47 and 2,665.74

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Solution

The fourth proportional to 3,991.17, 5,506.47 and 2,665.74 is: 3,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.17 : 5,506.47 = 2,665.74 : x
  2. Step 2: Convert to fraction form
    3,991.17/5,506.47 = 2,665.74/x
  3. Step 3: Cross multiply
    3,991.17x = 5,506.47 × 2,665.74
  4. Step 4: Simplify right side
    3,991.17x = 14,678,817.34
  5. Step 5: Solve for x
    x = 14,678,817.34/3,991.17
  6. Step 6: Final answer
    x = 3,677.82

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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.