Home / 2,219.98-3,063.95-2,121.57

Finding the Fourth Proportional to 2,219.98, 3,063.95 and 2,121.57

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Solution

The fourth proportional to 2,219.98, 3,063.95 and 2,121.57 is: 2,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.98 : 3,063.95 = 2,121.57 : x
  2. Step 2: Convert to fraction form
    2,219.98/3,063.95 = 2,121.57/x
  3. Step 3: Cross multiply
    2,219.98x = 3,063.95 × 2,121.57
  4. Step 4: Simplify right side
    2,219.98x = 6,500,384.40
  5. Step 5: Solve for x
    x = 6,500,384.40/2,219.98
  6. Step 6: Final answer
    x = 2,928.13

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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.