Home / 2,775.21-3,829.77-1,533.21

Finding the Fourth Proportional to 2,775.21, 3,829.77 and 1,533.21

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Solution

The fourth proportional to 2,775.21, 3,829.77 and 1,533.21 is: 2,115.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.21 : 3,829.77 = 1,533.21 : x
  2. Step 2: Convert to fraction form
    2,775.21/3,829.77 = 1,533.21/x
  3. Step 3: Cross multiply
    2,775.21x = 3,829.77 × 1,533.21
  4. Step 4: Simplify right side
    2,775.21x = 5,871,841.66
  5. Step 5: Solve for x
    x = 5,871,841.66/2,775.21
  6. Step 6: Final answer
    x = 2,115.82

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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.