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Finding the Fourth Proportional to 6,909.93, 10,364.90 and 1,715.81

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Solution

The fourth proportional to 6,909.93, 10,364.90 and 1,715.81 is: 2,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.93 : 10,364.90 = 1,715.81 : x
  2. Step 2: Convert to fraction form
    6,909.93/10,364.90 = 1,715.81/x
  3. Step 3: Cross multiply
    6,909.93x = 10,364.90 × 1,715.81
  4. Step 4: Simplify right side
    6,909.93x = 17,784,138.67
  5. Step 5: Solve for x
    x = 17,784,138.67/6,909.93
  6. Step 6: Final answer
    x = 2,573.71

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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.