Home / 7,101.50-9,799.98-3,957.68

Finding the Fourth Proportional to 7,101.50, 9,799.98 and 3,957.68

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Solution

The fourth proportional to 7,101.50, 9,799.98 and 3,957.68 is: 5,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,101.50 : 9,799.98 = 3,957.68 : x
  2. Step 2: Convert to fraction form
    7,101.50/9,799.98 = 3,957.68/x
  3. Step 3: Cross multiply
    7,101.50x = 9,799.98 × 3,957.68
  4. Step 4: Simplify right side
    7,101.50x = 38,785,184.85
  5. Step 5: Solve for x
    x = 38,785,184.85/7,101.50
  6. Step 6: Final answer
    x = 5,461.55

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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.