Home / 3,935.33-5,430.79-2,166.94

Finding the Fourth Proportional to 3,935.33, 5,430.79 and 2,166.94

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Solution

The fourth proportional to 3,935.33, 5,430.79 and 2,166.94 is: 2,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.33 : 5,430.79 = 2,166.94 : x
  2. Step 2: Convert to fraction form
    3,935.33/5,430.79 = 2,166.94/x
  3. Step 3: Cross multiply
    3,935.33x = 5,430.79 × 2,166.94
  4. Step 4: Simplify right side
    3,935.33x = 11,768,196.08
  5. Step 5: Solve for x
    x = 11,768,196.08/3,935.33
  6. Step 6: Final answer
    x = 2,990.40

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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.