Home / 7,351.72-10,145.40-3,994.55

Finding the Fourth Proportional to 7,351.72, 10,145.40 and 3,994.55

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Solution

The fourth proportional to 7,351.72, 10,145.40 and 3,994.55 is: 5,512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.72 : 10,145.40 = 3,994.55 : x
  2. Step 2: Convert to fraction form
    7,351.72/10,145.40 = 3,994.55/x
  3. Step 3: Cross multiply
    7,351.72x = 10,145.40 × 3,994.55
  4. Step 4: Simplify right side
    7,351.72x = 40,526,307.57
  5. Step 5: Solve for x
    x = 40,526,307.57/7,351.72
  6. Step 6: Final answer
    x = 5,512.49

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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.