Home / 1,539.90-2,322.09-1,369.80

Finding the Fourth Proportional to 1,539.90, 2,322.09 and 1,369.80

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Solution

The fourth proportional to 1,539.90, 2,322.09 and 1,369.80 is: 2,065.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.90 : 2,322.09 = 1,369.80 : x
  2. Step 2: Convert to fraction form
    1,539.90/2,322.09 = 1,369.80/x
  3. Step 3: Cross multiply
    1,539.90x = 2,322.09 × 1,369.80
  4. Step 4: Simplify right side
    1,539.90x = 3,180,798.88
  5. Step 5: Solve for x
    x = 3,180,798.88/1,539.90
  6. Step 6: Final answer
    x = 2,065.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.