Home / 5,421.55-8,130.30-3,773.20

Finding the Fourth Proportional to 5,421.55, 8,130.30 and 3,773.20

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Solution

The fourth proportional to 5,421.55, 8,130.30 and 3,773.20 is: 5,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.55 : 8,130.30 = 3,773.20 : x
  2. Step 2: Convert to fraction form
    5,421.55/8,130.30 = 3,773.20/x
  3. Step 3: Cross multiply
    5,421.55x = 8,130.30 × 3,773.20
  4. Step 4: Simplify right side
    5,421.55x = 30,677,247.96
  5. Step 5: Solve for x
    x = 30,677,247.96/5,421.55
  6. Step 6: Final answer
    x = 5,658.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.