Home / 5,423.15-7,485.51-3,185.12

Finding the Fourth Proportional to 5,423.15, 7,485.51 and 3,185.12

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Solution

The fourth proportional to 5,423.15, 7,485.51 and 3,185.12 is: 4,396.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.15 : 7,485.51 = 3,185.12 : x
  2. Step 2: Convert to fraction form
    5,423.15/7,485.51 = 3,185.12/x
  3. Step 3: Cross multiply
    5,423.15x = 7,485.51 × 3,185.12
  4. Step 4: Simplify right side
    5,423.15x = 23,842,278.27
  5. Step 5: Solve for x
    x = 23,842,278.27/5,423.15
  6. Step 6: Final answer
    x = 4,396.39

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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.