Home / 5,123.91-7,070.40-2,885.73

Finding the Fourth Proportional to 5,123.91, 7,070.40 and 2,885.73

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Solution

The fourth proportional to 5,123.91, 7,070.40 and 2,885.73 is: 3,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.91 : 7,070.40 = 2,885.73 : x
  2. Step 2: Convert to fraction form
    5,123.91/7,070.40 = 2,885.73/x
  3. Step 3: Cross multiply
    5,123.91x = 7,070.40 × 2,885.73
  4. Step 4: Simplify right side
    5,123.91x = 20,403,265.39
  5. Step 5: Solve for x
    x = 20,403,265.39/5,123.91
  6. Step 6: Final answer
    x = 3,981.97

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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.