Home / 4,913.17-6,780.09-2,788.72

Finding the Fourth Proportional to 4,913.17, 6,780.09 and 2,788.72

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Solution

The fourth proportional to 4,913.17, 6,780.09 and 2,788.72 is: 3,848.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.17 : 6,780.09 = 2,788.72 : x
  2. Step 2: Convert to fraction form
    4,913.17/6,780.09 = 2,788.72/x
  3. Step 3: Cross multiply
    4,913.17x = 6,780.09 × 2,788.72
  4. Step 4: Simplify right side
    4,913.17x = 18,907,772.58
  5. Step 5: Solve for x
    x = 18,907,772.58/4,913.17
  6. Step 6: Final answer
    x = 3,848.39

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1.5x scale

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.