Home / 3,911.56-5,395.62-3,386.68

Finding the Fourth Proportional to 3,911.56, 5,395.62 and 3,386.68

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Solution

The fourth proportional to 3,911.56, 5,395.62 and 3,386.68 is: 4,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.56 : 5,395.62 = 3,386.68 : x
  2. Step 2: Convert to fraction form
    3,911.56/5,395.62 = 3,386.68/x
  3. Step 3: Cross multiply
    3,911.56x = 5,395.62 × 3,386.68
  4. Step 4: Simplify right side
    3,911.56x = 18,273,238.34
  5. Step 5: Solve for x
    x = 18,273,238.34/3,911.56
  6. Step 6: Final answer
    x = 4,671.60

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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.