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Finding the Fourth Proportional to 6,407.55, 9,612.32 and 2,709.80

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Solution

The fourth proportional to 6,407.55, 9,612.32 and 2,709.80 is: 4,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.55 : 9,612.32 = 2,709.80 : x
  2. Step 2: Convert to fraction form
    6,407.55/9,612.32 = 2,709.80/x
  3. Step 3: Cross multiply
    6,407.55x = 9,612.32 × 2,709.80
  4. Step 4: Simplify right side
    6,407.55x = 26,047,464.74
  5. Step 5: Solve for x
    x = 26,047,464.74/6,407.55
  6. Step 6: Final answer
    x = 4,065.12

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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.