Home / 1,524.12-2,103.18-860.85

Finding the Fourth Proportional to 1,524.12, 2,103.18 and 860.85

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Solution

The fourth proportional to 1,524.12, 2,103.18 and 860.85 is: 1,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,524.12 : 2,103.18 = 860.85 : x
  2. Step 2: Convert to fraction form
    1,524.12/2,103.18 = 860.85/x
  3. Step 3: Cross multiply
    1,524.12x = 2,103.18 × 860.85
  4. Step 4: Simplify right side
    1,524.12x = 1,810,522.50
  5. Step 5: Solve for x
    x = 1,810,522.50/1,524.12
  6. Step 6: Final answer
    x = 1,187.91

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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.