Home / 5,421.58-7,480.68-4,164.05

Finding the Fourth Proportional to 5,421.58, 7,480.68 and 4,164.05

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Solution

The fourth proportional to 5,421.58, 7,480.68 and 4,164.05 is: 5,745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.58 : 7,480.68 = 4,164.05 : x
  2. Step 2: Convert to fraction form
    5,421.58/7,480.68 = 4,164.05/x
  3. Step 3: Cross multiply
    5,421.58x = 7,480.68 × 4,164.05
  4. Step 4: Simplify right side
    5,421.58x = 31,149,925.55
  5. Step 5: Solve for x
    x = 31,149,925.55/5,421.58
  6. Step 6: Final answer
    x = 5,745.54

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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.