Home / 3,935.40-5,430.42-2,257.26

Finding the Fourth Proportional to 3,935.40, 5,430.42 and 2,257.26

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Solution

The fourth proportional to 3,935.40, 5,430.42 and 2,257.26 is: 3,114.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.40 : 5,430.42 = 2,257.26 : x
  2. Step 2: Convert to fraction form
    3,935.40/5,430.42 = 2,257.26/x
  3. Step 3: Cross multiply
    3,935.40x = 5,430.42 × 2,257.26
  4. Step 4: Simplify right side
    3,935.40x = 12,257,869.85
  5. Step 5: Solve for x
    x = 12,257,869.85/3,935.40
  6. Step 6: Final answer
    x = 3,114.77

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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.