Home / 7,129.95-10,680.33-4,199.37

Finding the Fourth Proportional to 7,129.95, 10,680.33 and 4,199.37

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Solution

The fourth proportional to 7,129.95, 10,680.33 and 4,199.37 is: 6,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.95 : 10,680.33 = 4,199.37 : x
  2. Step 2: Convert to fraction form
    7,129.95/10,680.33 = 4,199.37/x
  3. Step 3: Cross multiply
    7,129.95x = 10,680.33 × 4,199.37
  4. Step 4: Simplify right side
    7,129.95x = 44,850,657.39
  5. Step 5: Solve for x
    x = 44,850,657.39/7,129.95
  6. Step 6: Final answer
    x = 6,290.46

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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.