Home / 7,315.75-10,973.63-2,121.67

Finding the Fourth Proportional to 7,315.75, 10,973.63 and 2,121.67

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Solution

The fourth proportional to 7,315.75, 10,973.63 and 2,121.67 is: 3,182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.75 : 10,973.63 = 2,121.67 : x
  2. Step 2: Convert to fraction form
    7,315.75/10,973.63 = 2,121.67/x
  3. Step 3: Cross multiply
    7,315.75x = 10,973.63 × 2,121.67
  4. Step 4: Simplify right side
    7,315.75x = 23,282,421.56
  5. Step 5: Solve for x
    x = 23,282,421.56/7,315.75
  6. Step 6: Final answer
    x = 3,182.51

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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.