Home / 5,431.61-8,145.72-2,311.58

Finding the Fourth Proportional to 5,431.61, 8,145.72 and 2,311.58

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Solution

The fourth proportional to 5,431.61, 8,145.72 and 2,311.58 is: 3,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.61 : 8,145.72 = 2,311.58 : x
  2. Step 2: Convert to fraction form
    5,431.61/8,145.72 = 2,311.58/x
  3. Step 3: Cross multiply
    5,431.61x = 8,145.72 × 2,311.58
  4. Step 4: Simplify right side
    5,431.61x = 18,829,442.71
  5. Step 5: Solve for x
    x = 18,829,442.71/5,431.61
  6. Step 6: Final answer
    x = 3,466.64

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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.