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Finding the Fourth Proportional to 3,719.70, 5,557.91 and 3,719.70

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Solution

The fourth proportional to 3,719.70, 5,557.91 and 3,719.70 is: 5,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.70 : 5,557.91 = 3,719.70 : x
  2. Step 2: Convert to fraction form
    3,719.70/5,557.91 = 3,719.70/x
  3. Step 3: Cross multiply
    3,719.70x = 5,557.91 × 3,719.70
  4. Step 4: Simplify right side
    3,719.70x = 20,673,739.23
  5. Step 5: Solve for x
    x = 20,673,739.23/3,719.70
  6. Step 6: Final answer
    x = 5,557.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.