Home / 7,925.28-11,889.88-2,378.72

Finding the Fourth Proportional to 7,925.28, 11,889.88 and 2,378.72

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Solution

The fourth proportional to 7,925.28, 11,889.88 and 2,378.72 is: 3,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.28 : 11,889.88 = 2,378.72 : x
  2. Step 2: Convert to fraction form
    7,925.28/11,889.88 = 2,378.72/x
  3. Step 3: Cross multiply
    7,925.28x = 11,889.88 × 2,378.72
  4. Step 4: Simplify right side
    7,925.28x = 28,282,695.35
  5. Step 5: Solve for x
    x = 28,282,695.35/7,925.28
  6. Step 6: Final answer
    x = 3,568.67

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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.