Home / 6,994.09-9,651.76-3,969.78

Finding the Fourth Proportional to 6,994.09, 9,651.76 and 3,969.78

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Solution

The fourth proportional to 6,994.09, 9,651.76 and 3,969.78 is: 5,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,994.09 : 9,651.76 = 3,969.78 : x
  2. Step 2: Convert to fraction form
    6,994.09/9,651.76 = 3,969.78/x
  3. Step 3: Cross multiply
    6,994.09x = 9,651.76 × 3,969.78
  4. Step 4: Simplify right side
    6,994.09x = 38,315,363.81
  5. Step 5: Solve for x
    x = 38,315,363.81/6,994.09
  6. Step 6: Final answer
    x = 5,478.25

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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.