Home / 9,281.74-12,821.07-6,919.78

Finding the Fourth Proportional to 9,281.74, 12,821.07 and 6,919.78

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Solution

The fourth proportional to 9,281.74, 12,821.07 and 6,919.78 is: 9,558.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,281.74 : 12,821.07 = 6,919.78 : x
  2. Step 2: Convert to fraction form
    9,281.74/12,821.07 = 6,919.78/x
  3. Step 3: Cross multiply
    9,281.74x = 12,821.07 × 6,919.78
  4. Step 4: Simplify right side
    9,281.74x = 88,718,983.76
  5. Step 5: Solve for x
    x = 88,718,983.76/9,281.74
  6. Step 6: Final answer
    x = 9,558.44

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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.