Home / 2,311.54-3,190.40-1,472.08

Finding the Fourth Proportional to 2,311.54, 3,190.40 and 1,472.08

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Solution

The fourth proportional to 2,311.54, 3,190.40 and 1,472.08 is: 2,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.54 : 3,190.40 = 1,472.08 : x
  2. Step 2: Convert to fraction form
    2,311.54/3,190.40 = 1,472.08/x
  3. Step 3: Cross multiply
    2,311.54x = 3,190.40 × 1,472.08
  4. Step 4: Simplify right side
    2,311.54x = 4,696,524.03
  5. Step 5: Solve for x
    x = 4,696,524.03/2,311.54
  6. Step 6: Final answer
    x = 2,031.77

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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.