Home / 1,530.23-2,107.42-1,431.41

Finding the Fourth Proportional to 1,530.23, 2,107.42 and 1,431.41

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Solution

The fourth proportional to 1,530.23, 2,107.42 and 1,431.41 is: 1,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.23 : 2,107.42 = 1,431.41 : x
  2. Step 2: Convert to fraction form
    1,530.23/2,107.42 = 1,431.41/x
  3. Step 3: Cross multiply
    1,530.23x = 2,107.42 × 1,431.41
  4. Step 4: Simplify right side
    1,530.23x = 3,016,567.95
  5. Step 5: Solve for x
    x = 3,016,567.95/1,530.23
  6. Step 6: Final answer
    x = 1,971.32

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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.