Home / 7,020.07-9,687.30-4,190.64

Finding the Fourth Proportional to 7,020.07, 9,687.30 and 4,190.64

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Solution

The fourth proportional to 7,020.07, 9,687.30 and 4,190.64 is: 5,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.07 : 9,687.30 = 4,190.64 : x
  2. Step 2: Convert to fraction form
    7,020.07/9,687.30 = 4,190.64/x
  3. Step 3: Cross multiply
    7,020.07x = 9,687.30 × 4,190.64
  4. Step 4: Simplify right side
    7,020.07x = 40,595,934.83
  5. Step 5: Solve for x
    x = 40,595,934.83/7,020.07
  6. Step 6: Final answer
    x = 5,782.84

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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.