Home / 3,991.48-5,508.48-2,312.35

Finding the Fourth Proportional to 3,991.48, 5,508.48 and 2,312.35

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Solution

The fourth proportional to 3,991.48, 5,508.48 and 2,312.35 is: 3,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.48 : 5,508.48 = 2,312.35 : x
  2. Step 2: Convert to fraction form
    3,991.48/5,508.48 = 2,312.35/x
  3. Step 3: Cross multiply
    3,991.48x = 5,508.48 × 2,312.35
  4. Step 4: Simplify right side
    3,991.48x = 12,737,533.73
  5. Step 5: Solve for x
    x = 12,737,533.73/3,991.48
  6. Step 6: Final answer
    x = 3,191.18

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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.