Home / 3,913.74-5,866.83-1,315.26

Finding the Fourth Proportional to 3,913.74, 5,866.83 and 1,315.26

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Solution

The fourth proportional to 3,913.74, 5,866.83 and 1,315.26 is: 1,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.74 : 5,866.83 = 1,315.26 : x
  2. Step 2: Convert to fraction form
    3,913.74/5,866.83 = 1,315.26/x
  3. Step 3: Cross multiply
    3,913.74x = 5,866.83 × 1,315.26
  4. Step 4: Simplify right side
    3,913.74x = 7,716,406.83
  5. Step 5: Solve for x
    x = 7,716,406.83/3,913.74
  6. Step 6: Final answer
    x = 1,971.62

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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.