Home / 3,935.16-5,430.52-2,166.75

Finding the Fourth Proportional to 3,935.16, 5,430.52 and 2,166.75

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Solution

The fourth proportional to 3,935.16, 5,430.52 and 2,166.75 is: 2,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.16 : 5,430.52 = 2,166.75 : x
  2. Step 2: Convert to fraction form
    3,935.16/5,430.52 = 2,166.75/x
  3. Step 3: Cross multiply
    3,935.16x = 5,430.52 × 2,166.75
  4. Step 4: Simplify right side
    3,935.16x = 11,766,569.73
  5. Step 5: Solve for x
    x = 11,766,569.73/3,935.16
  6. Step 6: Final answer
    x = 2,990.11

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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.