Home / 4,328.72-6,487-1,861.69

Finding the Fourth Proportional to 4,328.72, 6,487 and 1,861.69

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Solution

The fourth proportional to 4,328.72, 6,487 and 1,861.69 is: 2,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,328.72 : 6,487 = 1,861.69 : x
  2. Step 2: Convert to fraction form
    4,328.72/6,487 = 1,861.69/x
  3. Step 3: Cross multiply
    4,328.72x = 6,487 × 1,861.69
  4. Step 4: Simplify right side
    4,328.72x = 12,076,783.03
  5. Step 5: Solve for x
    x = 12,076,783.03/4,328.72
  6. Step 6: Final answer
    x = 2,789.92

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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.