Home / 5,380.57-7,421.08-3,893.41

Finding the Fourth Proportional to 5,380.57, 7,421.08 and 3,893.41

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Solution

The fourth proportional to 5,380.57, 7,421.08 and 3,893.41 is: 5,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.57 : 7,421.08 = 3,893.41 : x
  2. Step 2: Convert to fraction form
    5,380.57/7,421.08 = 3,893.41/x
  3. Step 3: Cross multiply
    5,380.57x = 7,421.08 × 3,893.41
  4. Step 4: Simplify right side
    5,380.57x = 28,893,307.08
  5. Step 5: Solve for x
    x = 28,893,307.08/5,380.57
  6. Step 6: Final answer
    x = 5,369.93

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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.