Home / 6,947.75-10,421.49-2,788.70

Finding the Fourth Proportional to 6,947.75, 10,421.49 and 2,788.70

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Solution

The fourth proportional to 6,947.75, 10,421.49 and 2,788.70 is: 4,182.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,947.75 : 10,421.49 = 2,788.70 : x
  2. Step 2: Convert to fraction form
    6,947.75/10,421.49 = 2,788.70/x
  3. Step 3: Cross multiply
    6,947.75x = 10,421.49 × 2,788.70
  4. Step 4: Simplify right side
    6,947.75x = 29,062,357.06
  5. Step 5: Solve for x
    x = 29,062,357.06/6,947.75
  6. Step 6: Final answer
    x = 4,182.99

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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.