Home / 4,943.12-6,821.40-2,847.68

Finding the Fourth Proportional to 4,943.12, 6,821.40 and 2,847.68

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Solution

The fourth proportional to 4,943.12, 6,821.40 and 2,847.68 is: 3,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,943.12 : 6,821.40 = 2,847.68 : x
  2. Step 2: Convert to fraction form
    4,943.12/6,821.40 = 2,847.68/x
  3. Step 3: Cross multiply
    4,943.12x = 6,821.40 × 2,847.68
  4. Step 4: Simplify right side
    4,943.12x = 19,425,164.35
  5. Step 5: Solve for x
    x = 19,425,164.35/4,943.12
  6. Step 6: Final answer
    x = 3,929.74

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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.