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Finding the Fourth Proportional to 3,888.50, 5,364.28 and 2,630.00

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Solution

The fourth proportional to 3,888.50, 5,364.28 and 2,630.00 is: 3,628.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.50 : 5,364.28 = 2,630.00 : x
  2. Step 2: Convert to fraction form
    3,888.50/5,364.28 = 2,630.00/x
  3. Step 3: Cross multiply
    3,888.50x = 5,364.28 × 2,630.00
  4. Step 4: Simplify right side
    3,888.50x = 14,108,029.58
  5. Step 5: Solve for x
    x = 14,108,029.58/3,888.50
  6. Step 6: Final answer
    x = 3,628.14

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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.