Home / 3,190.28-4,402.67-1,931.06

Finding the Fourth Proportional to 3,190.28, 4,402.67 and 1,931.06

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Solution

The fourth proportional to 3,190.28, 4,402.67 and 1,931.06 is: 2,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.28 : 4,402.67 = 1,931.06 : x
  2. Step 2: Convert to fraction form
    3,190.28/4,402.67 = 1,931.06/x
  3. Step 3: Cross multiply
    3,190.28x = 4,402.67 × 1,931.06
  4. Step 4: Simplify right side
    3,190.28x = 8,501,821.28
  5. Step 5: Solve for x
    x = 8,501,821.28/3,190.28
  6. Step 6: Final answer
    x = 2,664.92

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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.