Home / 3,991.03-5,507.63-2,312.76

Finding the Fourth Proportional to 3,991.03, 5,507.63 and 2,312.76

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Solution

The fourth proportional to 3,991.03, 5,507.63 and 2,312.76 is: 3,191.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.03 : 5,507.63 = 2,312.76 : x
  2. Step 2: Convert to fraction form
    3,991.03/5,507.63 = 2,312.76/x
  3. Step 3: Cross multiply
    3,991.03x = 5,507.63 × 2,312.76
  4. Step 4: Simplify right side
    3,991.03x = 12,737,857.13
  5. Step 5: Solve for x
    x = 12,737,857.13/3,991.03
  6. Step 6: Final answer
    x = 3,191.62

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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.