Home / 3,315.79-4,973.57-850.63

Finding the Fourth Proportional to 3,315.79, 4,973.57 and 850.63

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Solution

The fourth proportional to 3,315.79, 4,973.57 and 850.63 is: 1,275.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.79 : 4,973.57 = 850.63 : x
  2. Step 2: Convert to fraction form
    3,315.79/4,973.57 = 850.63/x
  3. Step 3: Cross multiply
    3,315.79x = 4,973.57 × 850.63
  4. Step 4: Simplify right side
    3,315.79x = 4,230,651.16
  5. Step 5: Solve for x
    x = 4,230,651.16/3,315.79
  6. Step 6: Final answer
    x = 1,275.91

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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.