Home / 5,166.46-7,129.30-2,928.68

Finding the Fourth Proportional to 5,166.46, 7,129.30 and 2,928.68

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Solution

The fourth proportional to 5,166.46, 7,129.30 and 2,928.68 is: 4,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.46 : 7,129.30 = 2,928.68 : x
  2. Step 2: Convert to fraction form
    5,166.46/7,129.30 = 2,928.68/x
  3. Step 3: Cross multiply
    5,166.46x = 7,129.30 × 2,928.68
  4. Step 4: Simplify right side
    5,166.46x = 20,879,438.32
  5. Step 5: Solve for x
    x = 20,879,438.32/5,166.46
  6. Step 6: Final answer
    x = 4,041.34

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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.