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Finding the Fourth Proportional to 6,798.96, 9,379.74 and 4,145.40

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Solution

The fourth proportional to 6,798.96, 9,379.74 and 4,145.40 is: 5,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,798.96 : 9,379.74 = 4,145.40 : x
  2. Step 2: Convert to fraction form
    6,798.96/9,379.74 = 4,145.40/x
  3. Step 3: Cross multiply
    6,798.96x = 9,379.74 × 4,145.40
  4. Step 4: Simplify right side
    6,798.96x = 38,882,774.20
  5. Step 5: Solve for x
    x = 38,882,774.20/6,798.96
  6. Step 6: Final answer
    x = 5,718.93

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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.