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Finding the Fourth Proportional to 4,629.74, 6,389.40 and 2,639.84

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Solution

The fourth proportional to 4,629.74, 6,389.40 and 2,639.84 is: 3,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,629.74 : 6,389.40 = 2,639.84 : x
  2. Step 2: Convert to fraction form
    4,629.74/6,389.40 = 2,639.84/x
  3. Step 3: Cross multiply
    4,629.74x = 6,389.40 × 2,639.84
  4. Step 4: Simplify right side
    4,629.74x = 16,866,961.75
  5. Step 5: Solve for x
    x = 16,866,961.75/4,629.74
  6. Step 6: Final answer
    x = 3,643.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.