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Finding the Fourth Proportional to 7,101.28, 9,799.77 and 3,957.58

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Solution

The fourth proportional to 7,101.28, 9,799.77 and 3,957.58 is: 5,461.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,101.28 : 9,799.77 = 3,957.58 : x
  2. Step 2: Convert to fraction form
    7,101.28/9,799.77 = 3,957.58/x
  3. Step 3: Cross multiply
    7,101.28x = 9,799.77 × 3,957.58
  4. Step 4: Simplify right side
    7,101.28x = 38,783,373.76
  5. Step 5: Solve for x
    x = 38,783,373.76/7,101.28
  6. Step 6: Final answer
    x = 5,461.46

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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.