Home / 1,220.40-1,829.52-1,102.32

Finding the Fourth Proportional to 1,220.40, 1,829.52 and 1,102.32

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Solution

The fourth proportional to 1,220.40, 1,829.52 and 1,102.32 is: 1,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.40 : 1,829.52 = 1,102.32 : x
  2. Step 2: Convert to fraction form
    1,220.40/1,829.52 = 1,102.32/x
  3. Step 3: Cross multiply
    1,220.40x = 1,829.52 × 1,102.32
  4. Step 4: Simplify right side
    1,220.40x = 2,016,716.49
  5. Step 5: Solve for x
    x = 2,016,716.49/1,220.40
  6. Step 6: Final answer
    x = 1,652.50

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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.