Home / 4,990.78-6,886.02-2,894.50

Finding the Fourth Proportional to 4,990.78, 6,886.02 and 2,894.50

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Solution

The fourth proportional to 4,990.78, 6,886.02 and 2,894.50 is: 3,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.78 : 6,886.02 = 2,894.50 : x
  2. Step 2: Convert to fraction form
    4,990.78/6,886.02 = 2,894.50/x
  3. Step 3: Cross multiply
    4,990.78x = 6,886.02 × 2,894.50
  4. Step 4: Simplify right side
    4,990.78x = 19,931,584.89
  5. Step 5: Solve for x
    x = 19,931,584.89/4,990.78
  6. Step 6: Final answer
    x = 3,993.68

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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.