Home / 2,880.67-4,321.57-1,125.61

Finding the Fourth Proportional to 2,880.67, 4,321.57 and 1,125.61

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Solution

The fourth proportional to 2,880.67, 4,321.57 and 1,125.61 is: 1,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.67 : 4,321.57 = 1,125.61 : x
  2. Step 2: Convert to fraction form
    2,880.67/4,321.57 = 1,125.61/x
  3. Step 3: Cross multiply
    2,880.67x = 4,321.57 × 1,125.61
  4. Step 4: Simplify right side
    2,880.67x = 4,864,402.41
  5. Step 5: Solve for x
    x = 4,864,402.41/2,880.67
  6. Step 6: Final answer
    x = 1,688.64

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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.