Home / 4,986.72-6,881.04-2,861.28

Finding the Fourth Proportional to 4,986.72, 6,881.04 and 2,861.28

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Solution

The fourth proportional to 4,986.72, 6,881.04 and 2,861.28 is: 3,948.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.72 : 6,881.04 = 2,861.28 : x
  2. Step 2: Convert to fraction form
    4,986.72/6,881.04 = 2,861.28/x
  3. Step 3: Cross multiply
    4,986.72x = 6,881.04 × 2,861.28
  4. Step 4: Simplify right side
    4,986.72x = 19,688,582.13
  5. Step 5: Solve for x
    x = 19,688,582.13/4,986.72
  6. Step 6: Final answer
    x = 3,948.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.