Home / 2,219.16-3,063.06-1,287.84

Finding the Fourth Proportional to 2,219.16, 3,063.06 and 1,287.84

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Solution

The fourth proportional to 2,219.16, 3,063.06 and 1,287.84 is: 1,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.16 : 3,063.06 = 1,287.84 : x
  2. Step 2: Convert to fraction form
    2,219.16/3,063.06 = 1,287.84/x
  3. Step 3: Cross multiply
    2,219.16x = 3,063.06 × 1,287.84
  4. Step 4: Simplify right side
    2,219.16x = 3,944,731.19
  5. Step 5: Solve for x
    x = 3,944,731.19/2,219.16
  6. Step 6: Final answer
    x = 1,777.58

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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.