Home / 3,686.18-5,529.40-1,313.28

Finding the Fourth Proportional to 3,686.18, 5,529.40 and 1,313.28

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Solution

The fourth proportional to 3,686.18, 5,529.40 and 1,313.28 is: 1,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.18 : 5,529.40 = 1,313.28 : x
  2. Step 2: Convert to fraction form
    3,686.18/5,529.40 = 1,313.28/x
  3. Step 3: Cross multiply
    3,686.18x = 5,529.40 × 1,313.28
  4. Step 4: Simplify right side
    3,686.18x = 7,261,647.15
  5. Step 5: Solve for x
    x = 7,261,647.15/3,686.18
  6. Step 6: Final answer
    x = 1,969.97

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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.