Home / 1,525.08-2,104.40-861.83

Finding the Fourth Proportional to 1,525.08, 2,104.40 and 861.83

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Solution

The fourth proportional to 1,525.08, 2,104.40 and 861.83 is: 1,189.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.08 : 2,104.40 = 861.83 : x
  2. Step 2: Convert to fraction form
    1,525.08/2,104.40 = 861.83/x
  3. Step 3: Cross multiply
    1,525.08x = 2,104.40 × 861.83
  4. Step 4: Simplify right side
    1,525.08x = 1,813,620.22
  5. Step 5: Solve for x
    x = 1,813,620.22/1,525.08
  6. Step 6: Final answer
    x = 1,189.20

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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.