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Finding the Fourth Proportional to 4,152, 6,228.96 and 1,378.80

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Solution

The fourth proportional to 4,152, 6,228.96 and 1,378.80 is: 2,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,152 : 6,228.96 = 1,378.80 : x
  2. Step 2: Convert to fraction form
    4,152/6,228.96 = 1,378.80/x
  3. Step 3: Cross multiply
    4,152x = 6,228.96 × 1,378.80
  4. Step 4: Simplify right side
    4,152x = 8,588,490.05
  5. Step 5: Solve for x
    x = 8,588,490.05/4,152
  6. Step 6: Final answer
    x = 2,068.52

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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.