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Finding the Fourth Proportional to 9,834.40, 13,571.70 and 5,358.40

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Solution

The fourth proportional to 9,834.40, 13,571.70 and 5,358.40 is: 7,394.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,834.40 : 13,571.70 = 5,358.40 : x
  2. Step 2: Convert to fraction form
    9,834.40/13,571.70 = 5,358.40/x
  3. Step 3: Cross multiply
    9,834.40x = 13,571.70 × 5,358.40
  4. Step 4: Simplify right side
    9,834.40x = 72,722,597.28
  5. Step 5: Solve for x
    x = 72,722,597.28/9,834.40
  6. Step 6: Final answer
    x = 7,394.72

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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.