Home / 7,021.42-9,685.28-4,186.94

Finding the Fourth Proportional to 7,021.42, 9,685.28 and 4,186.94

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Solution

The fourth proportional to 7,021.42, 9,685.28 and 4,186.94 is: 5,775.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.42 : 9,685.28 = 4,186.94 : x
  2. Step 2: Convert to fraction form
    7,021.42/9,685.28 = 4,186.94/x
  3. Step 3: Cross multiply
    7,021.42x = 9,685.28 × 4,186.94
  4. Step 4: Simplify right side
    7,021.42x = 40,551,686.24
  5. Step 5: Solve for x
    x = 40,551,686.24/7,021.42
  6. Step 6: Final answer
    x = 5,775.43

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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.