Home / 4,220.83-6,307.21-3,159.78

Finding the Fourth Proportional to 4,220.83, 6,307.21 and 3,159.78

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Solution

The fourth proportional to 4,220.83, 6,307.21 and 3,159.78 is: 4,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.83 : 6,307.21 = 3,159.78 : x
  2. Step 2: Convert to fraction form
    4,220.83/6,307.21 = 3,159.78/x
  3. Step 3: Cross multiply
    4,220.83x = 6,307.21 × 3,159.78
  4. Step 4: Simplify right side
    4,220.83x = 19,929,396.01
  5. Step 5: Solve for x
    x = 19,929,396.01/4,220.83
  6. Step 6: Final answer
    x = 4,721.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.