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Finding the Fourth Proportional to 9,793.76, 13,515.02 and 5,317.40

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Solution

The fourth proportional to 9,793.76, 13,515.02 and 5,317.40 is: 7,337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,793.76 : 13,515.02 = 5,317.40 : x
  2. Step 2: Convert to fraction form
    9,793.76/13,515.02 = 5,317.40/x
  3. Step 3: Cross multiply
    9,793.76x = 13,515.02 × 5,317.40
  4. Step 4: Simplify right side
    9,793.76x = 71,864,767.35
  5. Step 5: Solve for x
    x = 71,864,767.35/9,793.76
  6. Step 6: Final answer
    x = 7,337.81

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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.