Home / 1,548.12-2,318.52-1,221.30

Finding the Fourth Proportional to 1,548.12, 2,318.52 and 1,221.30

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Solution

The fourth proportional to 1,548.12, 2,318.52 and 1,221.30 is: 1,829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.12 : 2,318.52 = 1,221.30 : x
  2. Step 2: Convert to fraction form
    1,548.12/2,318.52 = 1,221.30/x
  3. Step 3: Cross multiply
    1,548.12x = 2,318.52 × 1,221.30
  4. Step 4: Simplify right side
    1,548.12x = 2,831,608.48
  5. Step 5: Solve for x
    x = 2,831,608.48/1,548.12
  6. Step 6: Final answer
    x = 1,829.06

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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.