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Finding the Fourth Proportional to 2,576.87, 3,880.41 and 1,851.51

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Solution

The fourth proportional to 2,576.87, 3,880.41 and 1,851.51 is: 2,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.87 : 3,880.41 = 1,851.51 : x
  2. Step 2: Convert to fraction form
    2,576.87/3,880.41 = 1,851.51/x
  3. Step 3: Cross multiply
    2,576.87x = 3,880.41 × 1,851.51
  4. Step 4: Simplify right side
    2,576.87x = 7,184,617.92
  5. Step 5: Solve for x
    x = 7,184,617.92/2,576.87
  6. Step 6: Final answer
    x = 2,788.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.