Home / 1,525.11-2,104.62-861.94

Finding the Fourth Proportional to 1,525.11, 2,104.62 and 861.94

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Solution

The fourth proportional to 1,525.11, 2,104.62 and 861.94 is: 1,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.11 : 2,104.62 = 861.94 : x
  2. Step 2: Convert to fraction form
    1,525.11/2,104.62 = 861.94/x
  3. Step 3: Cross multiply
    1,525.11x = 2,104.62 × 861.94
  4. Step 4: Simplify right side
    1,525.11x = 1,814,051.85
  5. Step 5: Solve for x
    x = 1,814,051.85/1,525.11
  6. Step 6: Final answer
    x = 1,189.46

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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.