Home / 5,557.21-8,331.46-2,782.49

Finding the Fourth Proportional to 5,557.21, 8,331.46 and 2,782.49

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Solution

The fourth proportional to 5,557.21, 8,331.46 and 2,782.49 is: 4,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,557.21 : 8,331.46 = 2,782.49 : x
  2. Step 2: Convert to fraction form
    5,557.21/8,331.46 = 2,782.49/x
  3. Step 3: Cross multiply
    5,557.21x = 8,331.46 × 2,782.49
  4. Step 4: Simplify right side
    5,557.21x = 23,182,155.52
  5. Step 5: Solve for x
    x = 23,182,155.52/5,557.21
  6. Step 6: Final answer
    x = 4,171.55

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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.