Home / 5,138.40-7,091.04-3,957.36

Finding the Fourth Proportional to 5,138.40, 7,091.04 and 3,957.36

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Solution

The fourth proportional to 5,138.40, 7,091.04 and 3,957.36 is: 5,461.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.40 : 7,091.04 = 3,957.36 : x
  2. Step 2: Convert to fraction form
    5,138.40/7,091.04 = 3,957.36/x
  3. Step 3: Cross multiply
    5,138.40x = 7,091.04 × 3,957.36
  4. Step 4: Simplify right side
    5,138.40x = 28,061,798.05
  5. Step 5: Solve for x
    x = 28,061,798.05/5,138.40
  6. Step 6: Final answer
    x = 5,461.19

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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.