Home / 3,852.81-5,317.38-2,280.87

Finding the Fourth Proportional to 3,852.81, 5,317.38 and 2,280.87

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Solution

The fourth proportional to 3,852.81, 5,317.38 and 2,280.87 is: 3,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.81 : 5,317.38 = 2,280.87 : x
  2. Step 2: Convert to fraction form
    3,852.81/5,317.38 = 2,280.87/x
  3. Step 3: Cross multiply
    3,852.81x = 5,317.38 × 2,280.87
  4. Step 4: Simplify right side
    3,852.81x = 12,128,252.52
  5. Step 5: Solve for x
    x = 12,128,252.52/3,852.81
  6. Step 6: Final answer
    x = 3,147.90

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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.