Home / 7,421.09-11,131.61-3,038.55

Finding the Fourth Proportional to 7,421.09, 11,131.61 and 3,038.55

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Solution

The fourth proportional to 7,421.09, 11,131.61 and 3,038.55 is: 4,557.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.09 : 11,131.61 = 3,038.55 : x
  2. Step 2: Convert to fraction form
    7,421.09/11,131.61 = 3,038.55/x
  3. Step 3: Cross multiply
    7,421.09x = 11,131.61 × 3,038.55
  4. Step 4: Simplify right side
    7,421.09x = 33,823,938.37
  5. Step 5: Solve for x
    x = 33,823,938.37/7,421.09
  6. Step 6: Final answer
    x = 4,557.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.