Home / 1,539.55-2,122.14-1,259.29

Finding the Fourth Proportional to 1,539.55, 2,122.14 and 1,259.29

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Solution

The fourth proportional to 1,539.55, 2,122.14 and 1,259.29 is: 1,735.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.55 : 2,122.14 = 1,259.29 : x
  2. Step 2: Convert to fraction form
    1,539.55/2,122.14 = 1,259.29/x
  3. Step 3: Cross multiply
    1,539.55x = 2,122.14 × 1,259.29
  4. Step 4: Simplify right side
    1,539.55x = 2,672,389.68
  5. Step 5: Solve for x
    x = 2,672,389.68/1,539.55
  6. Step 6: Final answer
    x = 1,735.83

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1.5x scale

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.