Home / 1,220.21-1,826.86-1,104.87

Finding the Fourth Proportional to 1,220.21, 1,826.86 and 1,104.87

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Solution

The fourth proportional to 1,220.21, 1,826.86 and 1,104.87 is: 1,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.21 : 1,826.86 = 1,104.87 : x
  2. Step 2: Convert to fraction form
    1,220.21/1,826.86 = 1,104.87/x
  3. Step 3: Cross multiply
    1,220.21x = 1,826.86 × 1,104.87
  4. Step 4: Simplify right side
    1,220.21x = 2,018,442.81
  5. Step 5: Solve for x
    x = 2,018,442.81/1,220.21
  6. Step 6: Final answer
    x = 1,654.18

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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.