Home / 5,812.63-8,020.70-3,928.31

Finding the Fourth Proportional to 5,812.63, 8,020.70 and 3,928.31

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Solution

The fourth proportional to 5,812.63, 8,020.70 and 3,928.31 is: 5,420.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.63 : 8,020.70 = 3,928.31 : x
  2. Step 2: Convert to fraction form
    5,812.63/8,020.70 = 3,928.31/x
  3. Step 3: Cross multiply
    5,812.63x = 8,020.70 × 3,928.31
  4. Step 4: Simplify right side
    5,812.63x = 31,507,781.08
  5. Step 5: Solve for x
    x = 31,507,781.08/5,812.63
  6. Step 6: Final answer
    x = 5,420.57

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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.