Home / 5,205.12-7,800.96-2,123.52

Finding the Fourth Proportional to 5,205.12, 7,800.96 and 2,123.52

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Solution

The fourth proportional to 5,205.12, 7,800.96 and 2,123.52 is: 3,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.12 : 7,800.96 = 2,123.52 : x
  2. Step 2: Convert to fraction form
    5,205.12/7,800.96 = 2,123.52/x
  3. Step 3: Cross multiply
    5,205.12x = 7,800.96 × 2,123.52
  4. Step 4: Simplify right side
    5,205.12x = 16,565,494.58
  5. Step 5: Solve for x
    x = 16,565,494.58/5,205.12
  6. Step 6: Final answer
    x = 3,182.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.