Home / 1,812.30-2,497.41-1,391.10

Finding the Fourth Proportional to 1,812.30, 2,497.41 and 1,391.10

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Solution

The fourth proportional to 1,812.30, 2,497.41 and 1,391.10 is: 1,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.30 : 2,497.41 = 1,391.10 : x
  2. Step 2: Convert to fraction form
    1,812.30/2,497.41 = 1,391.10/x
  3. Step 3: Cross multiply
    1,812.30x = 2,497.41 × 1,391.10
  4. Step 4: Simplify right side
    1,812.30x = 3,474,147.05
  5. Step 5: Solve for x
    x = 3,474,147.05/1,812.30
  6. Step 6: Final answer
    x = 1,916.98

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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.