Home / 1,531.16-2,291.86-1,219.51

Finding the Fourth Proportional to 1,531.16, 2,291.86 and 1,219.51

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Solution

The fourth proportional to 1,531.16, 2,291.86 and 1,219.51 is: 1,825.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.16 : 2,291.86 = 1,219.51 : x
  2. Step 2: Convert to fraction form
    1,531.16/2,291.86 = 1,219.51/x
  3. Step 3: Cross multiply
    1,531.16x = 2,291.86 × 1,219.51
  4. Step 4: Simplify right side
    1,531.16x = 2,794,950.58
  5. Step 5: Solve for x
    x = 2,794,950.58/1,531.16
  6. Step 6: Final answer
    x = 1,825.38

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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.