Home / 2,431.20-3,647.64-1,114.80

Finding the Fourth Proportional to 2,431.20, 3,647.64 and 1,114.80

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Solution

The fourth proportional to 2,431.20, 3,647.64 and 1,114.80 is: 1,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.20 : 3,647.64 = 1,114.80 : x
  2. Step 2: Convert to fraction form
    2,431.20/3,647.64 = 1,114.80/x
  3. Step 3: Cross multiply
    2,431.20x = 3,647.64 × 1,114.80
  4. Step 4: Simplify right side
    2,431.20x = 4,066,389.07
  5. Step 5: Solve for x
    x = 4,066,389.07/2,431.20
  6. Step 6: Final answer
    x = 1,672.59

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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.