Home / 5,401.60-8,100.64-1,938.08

Finding the Fourth Proportional to 5,401.60, 8,100.64 and 1,938.08

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Solution

The fourth proportional to 5,401.60, 8,100.64 and 1,938.08 is: 2,906.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,401.60 : 8,100.64 = 1,938.08 : x
  2. Step 2: Convert to fraction form
    5,401.60/8,100.64 = 1,938.08/x
  3. Step 3: Cross multiply
    5,401.60x = 8,100.64 × 1,938.08
  4. Step 4: Simplify right side
    5,401.60x = 15,699,688.37
  5. Step 5: Solve for x
    x = 15,699,688.37/5,401.60
  6. Step 6: Final answer
    x = 2,906.49

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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.