Home / 1,530.22-2,112.51-1,228.18

Finding the Fourth Proportional to 1,530.22, 2,112.51 and 1,228.18

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Solution

The fourth proportional to 1,530.22, 2,112.51 and 1,228.18 is: 1,695.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.22 : 2,112.51 = 1,228.18 : x
  2. Step 2: Convert to fraction form
    1,530.22/2,112.51 = 1,228.18/x
  3. Step 3: Cross multiply
    1,530.22x = 2,112.51 × 1,228.18
  4. Step 4: Simplify right side
    1,530.22x = 2,594,542.53
  5. Step 5: Solve for x
    x = 2,594,542.53/1,530.22
  6. Step 6: Final answer
    x = 1,695.54

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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.