Home / 8,430.72-12,638.94-3,497.28

Finding the Fourth Proportional to 8,430.72, 12,638.94 and 3,497.28

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Solution

The fourth proportional to 8,430.72, 12,638.94 and 3,497.28 is: 5,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.72 : 12,638.94 = 3,497.28 : x
  2. Step 2: Convert to fraction form
    8,430.72/12,638.94 = 3,497.28/x
  3. Step 3: Cross multiply
    8,430.72x = 12,638.94 × 3,497.28
  4. Step 4: Simplify right side
    8,430.72x = 44,201,912.08
  5. Step 5: Solve for x
    x = 44,201,912.08/8,430.72
  6. Step 6: Final answer
    x = 5,242.96

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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.