Home / 8,430.48-12,647.09-3,165.90

Finding the Fourth Proportional to 8,430.48, 12,647.09 and 3,165.90

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Solution

The fourth proportional to 8,430.48, 12,647.09 and 3,165.90 is: 4,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.48 : 12,647.09 = 3,165.90 : x
  2. Step 2: Convert to fraction form
    8,430.48/12,647.09 = 3,165.90/x
  3. Step 3: Cross multiply
    8,430.48x = 12,647.09 × 3,165.90
  4. Step 4: Simplify right side
    8,430.48x = 40,039,422.23
  5. Step 5: Solve for x
    x = 40,039,422.23/8,430.48
  6. Step 6: Final answer
    x = 4,749.36

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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.