Home / 3,728.69-5,595.46-1,420.19

Finding the Fourth Proportional to 3,728.69, 5,595.46 and 1,420.19

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Solution

The fourth proportional to 3,728.69, 5,595.46 and 1,420.19 is: 2,131.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.69 : 5,595.46 = 1,420.19 : x
  2. Step 2: Convert to fraction form
    3,728.69/5,595.46 = 1,420.19/x
  3. Step 3: Cross multiply
    3,728.69x = 5,595.46 × 1,420.19
  4. Step 4: Simplify right side
    3,728.69x = 7,946,616.34
  5. Step 5: Solve for x
    x = 7,946,616.34/3,728.69
  6. Step 6: Final answer
    x = 2,131.21

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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.