Home / 1,525.81-2,104.36-1,290.33

Finding the Fourth Proportional to 1,525.81, 2,104.36 and 1,290.33

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Solution

The fourth proportional to 1,525.81, 2,104.36 and 1,290.33 is: 1,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.81 : 2,104.36 = 1,290.33 : x
  2. Step 2: Convert to fraction form
    1,525.81/2,104.36 = 1,290.33/x
  3. Step 3: Cross multiply
    1,525.81x = 2,104.36 × 1,290.33
  4. Step 4: Simplify right side
    1,525.81x = 2,715,318.84
  5. Step 5: Solve for x
    x = 2,715,318.84/1,525.81
  6. Step 6: Final answer
    x = 1,779.59

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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.