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Finding the Fourth Proportional to 2,485.02, 3,427.90 and 1,551.90

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Solution

The fourth proportional to 2,485.02, 3,427.90 and 1,551.90 is: 2,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.02 : 3,427.90 = 1,551.90 : x
  2. Step 2: Convert to fraction form
    2,485.02/3,427.90 = 1,551.90/x
  3. Step 3: Cross multiply
    2,485.02x = 3,427.90 × 1,551.90
  4. Step 4: Simplify right side
    2,485.02x = 5,319,775.71
  5. Step 5: Solve for x
    x = 5,319,775.71/2,485.02
  6. Step 6: Final answer
    x = 2,140.73

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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.