Home / 4,088.61-6,128.87-1,621.89

Finding the Fourth Proportional to 4,088.61, 6,128.87 and 1,621.89

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Solution

The fourth proportional to 4,088.61, 6,128.87 and 1,621.89 is: 2,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,088.61 : 6,128.87 = 1,621.89 : x
  2. Step 2: Convert to fraction form
    4,088.61/6,128.87 = 1,621.89/x
  3. Step 3: Cross multiply
    4,088.61x = 6,128.87 × 1,621.89
  4. Step 4: Simplify right side
    4,088.61x = 9,940,344.85
  5. Step 5: Solve for x
    x = 9,940,344.85/4,088.61
  6. Step 6: Final answer
    x = 2,431.23

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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.