Home / 7,430.12-11,147.03-5,243.12

Finding the Fourth Proportional to 7,430.12, 11,147.03 and 5,243.12

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Solution

The fourth proportional to 7,430.12, 11,147.03 and 5,243.12 is: 7,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.12 : 11,147.03 = 5,243.12 : x
  2. Step 2: Convert to fraction form
    7,430.12/11,147.03 = 5,243.12/x
  3. Step 3: Cross multiply
    7,430.12x = 11,147.03 × 5,243.12
  4. Step 4: Simplify right side
    7,430.12x = 58,445,215.93
  5. Step 5: Solve for x
    x = 58,445,215.93/7,430.12
  6. Step 6: Final answer
    x = 7,865.99

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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.