Home / 2,797.08-4,193.78-947.80

Finding the Fourth Proportional to 2,797.08, 4,193.78 and 947.80

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Solution

The fourth proportional to 2,797.08, 4,193.78 and 947.80 is: 1,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,797.08 : 4,193.78 = 947.80 : x
  2. Step 2: Convert to fraction form
    2,797.08/4,193.78 = 947.80/x
  3. Step 3: Cross multiply
    2,797.08x = 4,193.78 × 947.80
  4. Step 4: Simplify right side
    2,797.08x = 3,974,864.68
  5. Step 5: Solve for x
    x = 3,974,864.68/2,797.08
  6. Step 6: Final answer
    x = 1,421.08

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1.5x scale

Why These Related Problems?

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