Home / 8,945.15-13,420.13-3,101.76

Finding the Fourth Proportional to 8,945.15, 13,420.13 and 3,101.76

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Solution

The fourth proportional to 8,945.15, 13,420.13 and 3,101.76 is: 4,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.15 : 13,420.13 = 3,101.76 : x
  2. Step 2: Convert to fraction form
    8,945.15/13,420.13 = 3,101.76/x
  3. Step 3: Cross multiply
    8,945.15x = 13,420.13 × 3,101.76
  4. Step 4: Simplify right side
    8,945.15x = 41,626,006.92
  5. Step 5: Solve for x
    x = 41,626,006.92/8,945.15
  6. Step 6: Final answer
    x = 4,653.47

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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.