Home / 8,738.72-13,102.70-4,290.72

Finding the Fourth Proportional to 8,738.72, 13,102.70 and 4,290.72

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Solution

The fourth proportional to 8,738.72, 13,102.70 and 4,290.72 is: 6,433.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,738.72 : 13,102.70 = 4,290.72 : x
  2. Step 2: Convert to fraction form
    8,738.72/13,102.70 = 4,290.72/x
  3. Step 3: Cross multiply
    8,738.72x = 13,102.70 × 4,290.72
  4. Step 4: Simplify right side
    8,738.72x = 56,219,995.49
  5. Step 5: Solve for x
    x = 56,219,995.49/8,738.72
  6. Step 6: Final answer
    x = 6,433.44

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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.