Home / 1,709.21-2,558.90-1,531.13

Finding the Fourth Proportional to 1,709.21, 2,558.90 and 1,531.13

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Solution

The fourth proportional to 1,709.21, 2,558.90 and 1,531.13 is: 2,292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.21 : 2,558.90 = 1,531.13 : x
  2. Step 2: Convert to fraction form
    1,709.21/2,558.90 = 1,531.13/x
  3. Step 3: Cross multiply
    1,709.21x = 2,558.90 × 1,531.13
  4. Step 4: Simplify right side
    1,709.21x = 3,918,000.90
  5. Step 5: Solve for x
    x = 3,918,000.90/1,709.21
  6. Step 6: Final answer
    x = 2,292.29

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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.