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Finding the Fourth Proportional to 5,009.64, 7,506.15 and 1,720.90

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Solution

The fourth proportional to 5,009.64, 7,506.15 and 1,720.90 is: 2,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.64 : 7,506.15 = 1,720.90 : x
  2. Step 2: Convert to fraction form
    5,009.64/7,506.15 = 1,720.90/x
  3. Step 3: Cross multiply
    5,009.64x = 7,506.15 × 1,720.90
  4. Step 4: Simplify right side
    5,009.64x = 12,917,333.54
  5. Step 5: Solve for x
    x = 12,917,333.54/5,009.64
  6. Step 6: Final answer
    x = 2,578.50

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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.