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Finding the Fourth Proportional to 3,898.76, 5,376.72 and 3,048.13

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Solution

The fourth proportional to 3,898.76, 5,376.72 and 3,048.13 is: 4,203.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.76 : 5,376.72 = 3,048.13 : x
  2. Step 2: Convert to fraction form
    3,898.76/5,376.72 = 3,048.13/x
  3. Step 3: Cross multiply
    3,898.76x = 5,376.72 × 3,048.13
  4. Step 4: Simplify right side
    3,898.76x = 16,388,941.53
  5. Step 5: Solve for x
    x = 16,388,941.53/3,898.76
  6. Step 6: Final answer
    x = 4,203.63

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1.5x scale

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.