Home / 2,219.09-3,322.95-2,153.40

Finding the Fourth Proportional to 2,219.09, 3,322.95 and 2,153.40

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Solution

The fourth proportional to 2,219.09, 3,322.95 and 2,153.40 is: 3,224.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.09 : 3,322.95 = 2,153.40 : x
  2. Step 2: Convert to fraction form
    2,219.09/3,322.95 = 2,153.40/x
  3. Step 3: Cross multiply
    2,219.09x = 3,322.95 × 2,153.40
  4. Step 4: Simplify right side
    2,219.09x = 7,155,640.53
  5. Step 5: Solve for x
    x = 7,155,640.53/2,219.09
  6. Step 6: Final answer
    x = 3,224.58

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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.