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Finding the Fourth Proportional to 1,670.08, 2,507.90 and 1,603.86

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Solution

The fourth proportional to 1,670.08, 2,507.90 and 1,603.86 is: 2,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.08 : 2,507.90 = 1,603.86 : x
  2. Step 2: Convert to fraction form
    1,670.08/2,507.90 = 1,603.86/x
  3. Step 3: Cross multiply
    1,670.08x = 2,507.90 × 1,603.86
  4. Step 4: Simplify right side
    1,670.08x = 4,022,320.49
  5. Step 5: Solve for x
    x = 4,022,320.49/1,670.08
  6. Step 6: Final answer
    x = 2,408.46

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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.