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Finding the Fourth Proportional to 4,263.60, 6,391 and 2,311.68

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Solution

The fourth proportional to 4,263.60, 6,391 and 2,311.68 is: 3,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,263.60 : 6,391 = 2,311.68 : x
  2. Step 2: Convert to fraction form
    4,263.60/6,391 = 2,311.68/x
  3. Step 3: Cross multiply
    4,263.60x = 6,391 × 2,311.68
  4. Step 4: Simplify right side
    4,263.60x = 14,773,946.88
  5. Step 5: Solve for x
    x = 14,773,946.88/4,263.60
  6. Step 6: Final answer
    x = 3,465.13

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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.