Home / 4,678.16-6,455.32-2,789.85

Finding the Fourth Proportional to 4,678.16, 6,455.32 and 2,789.85

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Solution

The fourth proportional to 4,678.16, 6,455.32 and 2,789.85 is: 3,849.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.16 : 6,455.32 = 2,789.85 : x
  2. Step 2: Convert to fraction form
    4,678.16/6,455.32 = 2,789.85/x
  3. Step 3: Cross multiply
    4,678.16x = 6,455.32 × 2,789.85
  4. Step 4: Simplify right side
    4,678.16x = 18,009,367.53
  5. Step 5: Solve for x
    x = 18,009,367.53/4,678.16
  6. Step 6: Final answer
    x = 3,849.67

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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.