Home / 7,151.49-10,728.59-2,219.99

Finding the Fourth Proportional to 7,151.49, 10,728.59 and 2,219.99

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Solution

The fourth proportional to 7,151.49, 10,728.59 and 2,219.99 is: 3,330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.49 : 10,728.59 = 2,219.99 : x
  2. Step 2: Convert to fraction form
    7,151.49/10,728.59 = 2,219.99/x
  3. Step 3: Cross multiply
    7,151.49x = 10,728.59 × 2,219.99
  4. Step 4: Simplify right side
    7,151.49x = 23,817,297.77
  5. Step 5: Solve for x
    x = 23,817,297.77/7,151.49
  6. Step 6: Final answer
    x = 3,330.40

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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.