Home / 5,631.21-8,445.54-2,121.58

Finding the Fourth Proportional to 5,631.21, 8,445.54 and 2,121.58

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Solution

The fourth proportional to 5,631.21, 8,445.54 and 2,121.58 is: 3,181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.21 : 8,445.54 = 2,121.58 : x
  2. Step 2: Convert to fraction form
    5,631.21/8,445.54 = 2,121.58/x
  3. Step 3: Cross multiply
    5,631.21x = 8,445.54 × 2,121.58
  4. Step 4: Simplify right side
    5,631.21x = 17,917,888.75
  5. Step 5: Solve for x
    x = 17,917,888.75/5,631.21
  6. Step 6: Final answer
    x = 3,181.89

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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.