Home / 3,110.48-4,292.01-1,931.12

Finding the Fourth Proportional to 3,110.48, 4,292.01 and 1,931.12

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Solution

The fourth proportional to 3,110.48, 4,292.01 and 1,931.12 is: 2,664.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.48 : 4,292.01 = 1,931.12 : x
  2. Step 2: Convert to fraction form
    3,110.48/4,292.01 = 1,931.12/x
  3. Step 3: Cross multiply
    3,110.48x = 4,292.01 × 1,931.12
  4. Step 4: Simplify right side
    3,110.48x = 8,288,364.89
  5. Step 5: Solve for x
    x = 8,288,364.89/3,110.48
  6. Step 6: Final answer
    x = 2,664.66

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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.