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Finding the Fourth Proportional to 6,720.90, 10,081.35 and 2,616.90

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Solution

The fourth proportional to 6,720.90, 10,081.35 and 2,616.90 is: 3,925.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.90 : 10,081.35 = 2,616.90 : x
  2. Step 2: Convert to fraction form
    6,720.90/10,081.35 = 2,616.90/x
  3. Step 3: Cross multiply
    6,720.90x = 10,081.35 × 2,616.90
  4. Step 4: Simplify right side
    6,720.90x = 26,381,884.82
  5. Step 5: Solve for x
    x = 26,381,884.82/6,720.90
  6. Step 6: Final answer
    x = 3,925.35

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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.