Home / 1,221.18-1,828.08-1,025.16

Finding the Fourth Proportional to 1,221.18, 1,828.08 and 1,025.16

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Solution

The fourth proportional to 1,221.18, 1,828.08 and 1,025.16 is: 1,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.18 : 1,828.08 = 1,025.16 : x
  2. Step 2: Convert to fraction form
    1,221.18/1,828.08 = 1,025.16/x
  3. Step 3: Cross multiply
    1,221.18x = 1,828.08 × 1,025.16
  4. Step 4: Simplify right side
    1,221.18x = 1,874,074.49
  5. Step 5: Solve for x
    x = 1,874,074.49/1,221.18
  6. Step 6: Final answer
    x = 1,534.64

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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.