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Finding the Fourth Proportional to 9,703.39, 13,391.79 and 5,396.91

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Solution

The fourth proportional to 9,703.39, 13,391.79 and 5,396.91 is: 7,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,703.39 : 13,391.79 = 5,396.91 : x
  2. Step 2: Convert to fraction form
    9,703.39/13,391.79 = 5,396.91/x
  3. Step 3: Cross multiply
    9,703.39x = 13,391.79 × 5,396.91
  4. Step 4: Simplify right side
    9,703.39x = 72,274,285.37
  5. Step 5: Solve for x
    x = 72,274,285.37/9,703.39
  6. Step 6: Final answer
    x = 7,448.35

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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.