Home / 3,110.77-4,292.85-1,931.84

Finding the Fourth Proportional to 3,110.77, 4,292.85 and 1,931.84

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Solution

The fourth proportional to 3,110.77, 4,292.85 and 1,931.84 is: 2,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.77 : 4,292.85 = 1,931.84 : x
  2. Step 2: Convert to fraction form
    3,110.77/4,292.85 = 1,931.84/x
  3. Step 3: Cross multiply
    3,110.77x = 4,292.85 × 1,931.84
  4. Step 4: Simplify right side
    3,110.77x = 8,293,101.22
  5. Step 5: Solve for x
    x = 8,293,101.22/3,110.77
  6. Step 6: Final answer
    x = 2,665.93

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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.