Home / 7,590.21-11,381.97-3,430.05

Finding the Fourth Proportional to 7,590.21, 11,381.97 and 3,430.05

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Solution

The fourth proportional to 7,590.21, 11,381.97 and 3,430.05 is: 5,143.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,590.21 : 11,381.97 = 3,430.05 : x
  2. Step 2: Convert to fraction form
    7,590.21/11,381.97 = 3,430.05/x
  3. Step 3: Cross multiply
    7,590.21x = 11,381.97 × 3,430.05
  4. Step 4: Simplify right side
    7,590.21x = 39,040,760.40
  5. Step 5: Solve for x
    x = 39,040,760.40/7,590.21
  6. Step 6: Final answer
    x = 5,143.57

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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.