Home / 3,935.40-5,430.65-2,256.73

Finding the Fourth Proportional to 3,935.40, 5,430.65 and 2,256.73

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Solution

The fourth proportional to 3,935.40, 5,430.65 and 2,256.73 is: 3,114.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.40 : 5,430.65 = 2,256.73 : x
  2. Step 2: Convert to fraction form
    3,935.40/5,430.65 = 2,256.73/x
  3. Step 3: Cross multiply
    3,935.40x = 5,430.65 × 2,256.73
  4. Step 4: Simplify right side
    3,935.40x = 12,255,485.91
  5. Step 5: Solve for x
    x = 12,255,485.91/3,935.40
  6. Step 6: Final answer
    x = 3,114.16

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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.