Home / 8,939.54-13,401.70-3,938.16

Finding the Fourth Proportional to 8,939.54, 13,401.70 and 3,938.16

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Solution

The fourth proportional to 8,939.54, 13,401.70 and 3,938.16 is: 5,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.54 : 13,401.70 = 3,938.16 : x
  2. Step 2: Convert to fraction form
    8,939.54/13,401.70 = 3,938.16/x
  3. Step 3: Cross multiply
    8,939.54x = 13,401.70 × 3,938.16
  4. Step 4: Simplify right side
    8,939.54x = 52,778,038.87
  5. Step 5: Solve for x
    x = 52,778,038.87/8,939.54
  6. Step 6: Final answer
    x = 5,903.89

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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.