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Finding the Fourth Proportional to 2,807.90, 3,874.69 and 1,548.98

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Solution

The fourth proportional to 2,807.90, 3,874.69 and 1,548.98 is: 2,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.90 : 3,874.69 = 1,548.98 : x
  2. Step 2: Convert to fraction form
    2,807.90/3,874.69 = 1,548.98/x
  3. Step 3: Cross multiply
    2,807.90x = 3,874.69 × 1,548.98
  4. Step 4: Simplify right side
    2,807.90x = 6,001,790.20
  5. Step 5: Solve for x
    x = 6,001,790.20/2,807.90
  6. Step 6: Final answer
    x = 2,137.47

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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.