Home / 3,188.48-4,775.74-2,261.21

Finding the Fourth Proportional to 3,188.48, 4,775.74 and 2,261.21

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Solution

The fourth proportional to 3,188.48, 4,775.74 and 2,261.21 is: 3,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.48 : 4,775.74 = 2,261.21 : x
  2. Step 2: Convert to fraction form
    3,188.48/4,775.74 = 2,261.21/x
  3. Step 3: Cross multiply
    3,188.48x = 4,775.74 × 2,261.21
  4. Step 4: Simplify right side
    3,188.48x = 10,798,921.51
  5. Step 5: Solve for x
    x = 10,798,921.51/3,188.48
  6. Step 6: Final answer
    x = 3,386.86

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1.5x scale

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.