Home / 1,531.19-2,113.56-1,090.37

Finding the Fourth Proportional to 1,531.19, 2,113.56 and 1,090.37

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Solution

The fourth proportional to 1,531.19, 2,113.56 and 1,090.37 is: 1,505.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.19 : 2,113.56 = 1,090.37 : x
  2. Step 2: Convert to fraction form
    1,531.19/2,113.56 = 1,090.37/x
  3. Step 3: Cross multiply
    1,531.19x = 2,113.56 × 1,090.37
  4. Step 4: Simplify right side
    1,531.19x = 2,304,551.85
  5. Step 5: Solve for x
    x = 2,304,551.85/1,531.19
  6. Step 6: Final answer
    x = 1,505.08

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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.