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Finding the Fourth Proportional to 4,662.02, 6,990.63 and 1,887.95

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Solution

The fourth proportional to 4,662.02, 6,990.63 and 1,887.95 is: 2,830.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,662.02 : 6,990.63 = 1,887.95 : x
  2. Step 2: Convert to fraction form
    4,662.02/6,990.63 = 1,887.95/x
  3. Step 3: Cross multiply
    4,662.02x = 6,990.63 × 1,887.95
  4. Step 4: Simplify right side
    4,662.02x = 13,197,924.96
  5. Step 5: Solve for x
    x = 13,197,924.96/4,662.02
  6. Step 6: Final answer
    x = 2,830.95

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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.