Home / 4,215.14-6,319.59-2,021.78

Finding the Fourth Proportional to 4,215.14, 6,319.59 and 2,021.78

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Solution

The fourth proportional to 4,215.14, 6,319.59 and 2,021.78 is: 3,031.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.14 : 6,319.59 = 2,021.78 : x
  2. Step 2: Convert to fraction form
    4,215.14/6,319.59 = 2,021.78/x
  3. Step 3: Cross multiply
    4,215.14x = 6,319.59 × 2,021.78
  4. Step 4: Simplify right side
    4,215.14x = 12,776,836.47
  5. Step 5: Solve for x
    x = 12,776,836.47/4,215.14
  6. Step 6: Final answer
    x = 3,031.18

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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.