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Finding the Fourth Proportional to 6,651.09, 9,975.86 and 1,720.35

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Solution

The fourth proportional to 6,651.09, 9,975.86 and 1,720.35 is: 2,580.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.09 : 9,975.86 = 1,720.35 : x
  2. Step 2: Convert to fraction form
    6,651.09/9,975.86 = 1,720.35/x
  3. Step 3: Cross multiply
    6,651.09x = 9,975.86 × 1,720.35
  4. Step 4: Simplify right side
    6,651.09x = 17,161,970.75
  5. Step 5: Solve for x
    x = 17,161,970.75/6,651.09
  6. Step 6: Final answer
    x = 2,580.32

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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.