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Finding the Fourth Proportional to 2,807.54, 4,211.01 and 1,247.57

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Solution

The fourth proportional to 2,807.54, 4,211.01 and 1,247.57 is: 1,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.54 : 4,211.01 = 1,247.57 : x
  2. Step 2: Convert to fraction form
    2,807.54/4,211.01 = 1,247.57/x
  3. Step 3: Cross multiply
    2,807.54x = 4,211.01 × 1,247.57
  4. Step 4: Simplify right side
    2,807.54x = 5,253,529.75
  5. Step 5: Solve for x
    x = 5,253,529.75/2,807.54
  6. Step 6: Final answer
    x = 1,871.22

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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.