Home / 2,885.61-4,321.88-1,421.54

Finding the Fourth Proportional to 2,885.61, 4,321.88 and 1,421.54

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Solution

The fourth proportional to 2,885.61, 4,321.88 and 1,421.54 is: 2,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.61 : 4,321.88 = 1,421.54 : x
  2. Step 2: Convert to fraction form
    2,885.61/4,321.88 = 1,421.54/x
  3. Step 3: Cross multiply
    2,885.61x = 4,321.88 × 1,421.54
  4. Step 4: Simplify right side
    2,885.61x = 6,143,696.58
  5. Step 5: Solve for x
    x = 6,143,696.58/2,885.61
  6. Step 6: Final answer
    x = 2,129.08

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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.