Home / 4,927.84-7,389.30-1,639.78

Finding the Fourth Proportional to 4,927.84, 7,389.30 and 1,639.78

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Solution

The fourth proportional to 4,927.84, 7,389.30 and 1,639.78 is: 2,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,927.84 : 7,389.30 = 1,639.78 : x
  2. Step 2: Convert to fraction form
    4,927.84/7,389.30 = 1,639.78/x
  3. Step 3: Cross multiply
    4,927.84x = 7,389.30 × 1,639.78
  4. Step 4: Simplify right side
    4,927.84x = 12,116,826.35
  5. Step 5: Solve for x
    x = 12,116,826.35/4,927.84
  6. Step 6: Final answer
    x = 2,458.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.