Home / 7,108.95-9,812.31-4,125.75

Finding the Fourth Proportional to 7,108.95, 9,812.31 and 4,125.75

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Solution

The fourth proportional to 7,108.95, 9,812.31 and 4,125.75 is: 5,694.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.95 : 9,812.31 = 4,125.75 : x
  2. Step 2: Convert to fraction form
    7,108.95/9,812.31 = 4,125.75/x
  3. Step 3: Cross multiply
    7,108.95x = 9,812.31 × 4,125.75
  4. Step 4: Simplify right side
    7,108.95x = 40,483,137.98
  5. Step 5: Solve for x
    x = 40,483,137.98/7,108.95
  6. Step 6: Final answer
    x = 5,694.67

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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.