Home / 7,943-11,918.55-3,503.76

Finding the Fourth Proportional to 7,943, 11,918.55 and 3,503.76

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Solution

The fourth proportional to 7,943, 11,918.55 and 3,503.76 is: 5,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943 : 11,918.55 = 3,503.76 : x
  2. Step 2: Convert to fraction form
    7,943/11,918.55 = 3,503.76/x
  3. Step 3: Cross multiply
    7,943x = 11,918.55 × 3,503.76
  4. Step 4: Simplify right side
    7,943x = 41,759,738.75
  5. Step 5: Solve for x
    x = 41,759,738.75/7,943
  6. Step 6: Final answer
    x = 5,257.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.