Home / 9,108.87-12,569.36-6,720.15

Finding the Fourth Proportional to 9,108.87, 12,569.36 and 6,720.15

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Solution

The fourth proportional to 9,108.87, 12,569.36 and 6,720.15 is: 9,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.87 : 12,569.36 = 6,720.15 : x
  2. Step 2: Convert to fraction form
    9,108.87/12,569.36 = 6,720.15/x
  3. Step 3: Cross multiply
    9,108.87x = 12,569.36 × 6,720.15
  4. Step 4: Simplify right side
    9,108.87x = 84,467,951.00
  5. Step 5: Solve for x
    x = 84,467,951.00/9,108.87
  6. Step 6: Final answer
    x = 9,273.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.