Home / 7,826.39-10,800.43-4,289.61

Finding the Fourth Proportional to 7,826.39, 10,800.43 and 4,289.61

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Solution

The fourth proportional to 7,826.39, 10,800.43 and 4,289.61 is: 5,919.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.39 : 10,800.43 = 4,289.61 : x
  2. Step 2: Convert to fraction form
    7,826.39/10,800.43 = 4,289.61/x
  3. Step 3: Cross multiply
    7,826.39x = 10,800.43 × 4,289.61
  4. Step 4: Simplify right side
    7,826.39x = 46,329,621.81
  5. Step 5: Solve for x
    x = 46,329,621.81/7,826.39
  6. Step 6: Final answer
    x = 5,919.67

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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.