Home / 7,090.61-9,785.26-3,860.65

Finding the Fourth Proportional to 7,090.61, 9,785.26 and 3,860.65

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Solution

The fourth proportional to 7,090.61, 9,785.26 and 3,860.65 is: 5,327.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.61 : 9,785.26 = 3,860.65 : x
  2. Step 2: Convert to fraction form
    7,090.61/9,785.26 = 3,860.65/x
  3. Step 3: Cross multiply
    7,090.61x = 9,785.26 × 3,860.65
  4. Step 4: Simplify right side
    7,090.61x = 37,777,436.89
  5. Step 5: Solve for x
    x = 37,777,436.89/7,090.61
  6. Step 6: Final answer
    x = 5,327.81

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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.