Home / 5,406.80-7,461.90-3,390.54

Finding the Fourth Proportional to 5,406.80, 7,461.90 and 3,390.54

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Solution

The fourth proportional to 5,406.80, 7,461.90 and 3,390.54 is: 4,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.80 : 7,461.90 = 3,390.54 : x
  2. Step 2: Convert to fraction form
    5,406.80/7,461.90 = 3,390.54/x
  3. Step 3: Cross multiply
    5,406.80x = 7,461.90 × 3,390.54
  4. Step 4: Simplify right side
    5,406.80x = 25,299,870.43
  5. Step 5: Solve for x
    x = 25,299,870.43/5,406.80
  6. Step 6: Final answer
    x = 4,679.27

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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.