Home / 7,938.21-11,910.56-4,381.77

Finding the Fourth Proportional to 7,938.21, 11,910.56 and 4,381.77

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Solution

The fourth proportional to 7,938.21, 11,910.56 and 4,381.77 is: 6,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.21 : 11,910.56 = 4,381.77 : x
  2. Step 2: Convert to fraction form
    7,938.21/11,910.56 = 4,381.77/x
  3. Step 3: Cross multiply
    7,938.21x = 11,910.56 × 4,381.77
  4. Step 4: Simplify right side
    7,938.21x = 52,189,334.49
  5. Step 5: Solve for x
    x = 52,189,334.49/7,938.21
  6. Step 6: Final answer
    x = 6,574.45

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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.