Home / 8,357.40-11,531.70-5,372.55

Finding the Fourth Proportional to 8,357.40, 11,531.70 and 5,372.55

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Solution

The fourth proportional to 8,357.40, 11,531.70 and 5,372.55 is: 7,413.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,357.40 : 11,531.70 = 5,372.55 : x
  2. Step 2: Convert to fraction form
    8,357.40/11,531.70 = 5,372.55/x
  3. Step 3: Cross multiply
    8,357.40x = 11,531.70 × 5,372.55
  4. Step 4: Simplify right side
    8,357.40x = 61,954,634.84
  5. Step 5: Solve for x
    x = 61,954,634.84/8,357.40
  6. Step 6: Final answer
    x = 7,413.15

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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.