Home / 5,121.93-7,683.05-2,783.06

Finding the Fourth Proportional to 5,121.93, 7,683.05 and 2,783.06

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Solution

The fourth proportional to 5,121.93, 7,683.05 and 2,783.06 is: 4,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.93 : 7,683.05 = 2,783.06 : x
  2. Step 2: Convert to fraction form
    5,121.93/7,683.05 = 2,783.06/x
  3. Step 3: Cross multiply
    5,121.93x = 7,683.05 × 2,783.06
  4. Step 4: Simplify right side
    5,121.93x = 21,382,389.13
  5. Step 5: Solve for x
    x = 21,382,389.13/5,121.93
  6. Step 6: Final answer
    x = 4,174.67

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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.