Home / 4,913.40-6,780.86-2,789.30

Finding the Fourth Proportional to 4,913.40, 6,780.86 and 2,789.30

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Solution

The fourth proportional to 4,913.40, 6,780.86 and 2,789.30 is: 3,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.40 : 6,780.86 = 2,789.30 : x
  2. Step 2: Convert to fraction form
    4,913.40/6,780.86 = 2,789.30/x
  3. Step 3: Cross multiply
    4,913.40x = 6,780.86 × 2,789.30
  4. Step 4: Simplify right side
    4,913.40x = 18,913,804.95
  5. Step 5: Solve for x
    x = 18,913,804.95/4,913.40
  6. Step 6: Final answer
    x = 3,849.43

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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.