Home / 1,851.81-2,560.43-1,618.38

Finding the Fourth Proportional to 1,851.81, 2,560.43 and 1,618.38

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Solution

The fourth proportional to 1,851.81, 2,560.43 and 1,618.38 is: 2,237.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.81 : 2,560.43 = 1,618.38 : x
  2. Step 2: Convert to fraction form
    1,851.81/2,560.43 = 1,618.38/x
  3. Step 3: Cross multiply
    1,851.81x = 2,560.43 × 1,618.38
  4. Step 4: Simplify right side
    1,851.81x = 4,143,748.70
  5. Step 5: Solve for x
    x = 4,143,748.70/1,851.81
  6. Step 6: Final answer
    x = 2,237.67

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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.