Home / 7,018.44-9,685.20-4,223.40

Finding the Fourth Proportional to 7,018.44, 9,685.20 and 4,223.40

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Solution

The fourth proportional to 7,018.44, 9,685.20 and 4,223.40 is: 5,828.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.44 : 9,685.20 = 4,223.40 : x
  2. Step 2: Convert to fraction form
    7,018.44/9,685.20 = 4,223.40/x
  3. Step 3: Cross multiply
    7,018.44x = 9,685.20 × 4,223.40
  4. Step 4: Simplify right side
    7,018.44x = 40,904,473.68
  5. Step 5: Solve for x
    x = 40,904,473.68/7,018.44
  6. Step 6: Final answer
    x = 5,828.14

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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.