Home / 7,018.75-9,685.04-4,186.28

Finding the Fourth Proportional to 7,018.75, 9,685.04 and 4,186.28

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Solution

The fourth proportional to 7,018.75, 9,685.04 and 4,186.28 is: 5,776.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.75 : 9,685.04 = 4,186.28 : x
  2. Step 2: Convert to fraction form
    7,018.75/9,685.04 = 4,186.28/x
  3. Step 3: Cross multiply
    7,018.75x = 9,685.04 × 4,186.28
  4. Step 4: Simplify right side
    7,018.75x = 40,544,289.25
  5. Step 5: Solve for x
    x = 40,544,289.25/7,018.75
  6. Step 6: Final answer
    x = 5,776.57

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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.