Home / 1,577.08-2,176.34-868.83

Finding the Fourth Proportional to 1,577.08, 2,176.34 and 868.83

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Solution

The fourth proportional to 1,577.08, 2,176.34 and 868.83 is: 1,198.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.08 : 2,176.34 = 868.83 : x
  2. Step 2: Convert to fraction form
    1,577.08/2,176.34 = 868.83/x
  3. Step 3: Cross multiply
    1,577.08x = 2,176.34 × 868.83
  4. Step 4: Simplify right side
    1,577.08x = 1,890,854.26
  5. Step 5: Solve for x
    x = 1,890,854.26/1,577.08
  6. Step 6: Final answer
    x = 1,198.96

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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.