Home / 9,639.33-13,302.80-5,390.33

Finding the Fourth Proportional to 9,639.33, 13,302.80 and 5,390.33

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Solution

The fourth proportional to 9,639.33, 13,302.80 and 5,390.33 is: 7,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.33 : 13,302.80 = 5,390.33 : x
  2. Step 2: Convert to fraction form
    9,639.33/13,302.80 = 5,390.33/x
  3. Step 3: Cross multiply
    9,639.33x = 13,302.80 × 5,390.33
  4. Step 4: Simplify right side
    9,639.33x = 71,706,408.67
  5. Step 5: Solve for x
    x = 71,706,408.67/9,639.33
  6. Step 6: Final answer
    x = 7,438.94

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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.