Home / 5,629.50-7,768.71-3,145.98

Finding the Fourth Proportional to 5,629.50, 7,768.71 and 3,145.98

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Solution

The fourth proportional to 5,629.50, 7,768.71 and 3,145.98 is: 4,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.50 : 7,768.71 = 3,145.98 : x
  2. Step 2: Convert to fraction form
    5,629.50/7,768.71 = 3,145.98/x
  3. Step 3: Cross multiply
    5,629.50x = 7,768.71 × 3,145.98
  4. Step 4: Simplify right side
    5,629.50x = 24,440,206.29
  5. Step 5: Solve for x
    x = 24,440,206.29/5,629.50
  6. Step 6: Final answer
    x = 4,341.45

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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.