Home / 3,778.81-5,669.13-1,313.28

Finding the Fourth Proportional to 3,778.81, 5,669.13 and 1,313.28

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Solution

The fourth proportional to 3,778.81, 5,669.13 and 1,313.28 is: 1,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.81 : 5,669.13 = 1,313.28 : x
  2. Step 2: Convert to fraction form
    3,778.81/5,669.13 = 1,313.28/x
  3. Step 3: Cross multiply
    3,778.81x = 5,669.13 × 1,313.28
  4. Step 4: Simplify right side
    3,778.81x = 7,445,126.70
  5. Step 5: Solve for x
    x = 7,445,126.70/3,778.81
  6. Step 6: Final answer
    x = 1,970.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.