Home / 5,143.25-7,715.28-1,856.67

Finding the Fourth Proportional to 5,143.25, 7,715.28 and 1,856.67

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Solution

The fourth proportional to 5,143.25, 7,715.28 and 1,856.67 is: 2,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.25 : 7,715.28 = 1,856.67 : x
  2. Step 2: Convert to fraction form
    5,143.25/7,715.28 = 1,856.67/x
  3. Step 3: Cross multiply
    5,143.25x = 7,715.28 × 1,856.67
  4. Step 4: Simplify right side
    5,143.25x = 14,324,728.92
  5. Step 5: Solve for x
    x = 14,324,728.92/5,143.25
  6. Step 6: Final answer
    x = 2,785.15

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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.