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Finding the Fourth Proportional to 1,671.40, 2,507.10 and 1,647.10

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Solution

The fourth proportional to 1,671.40, 2,507.10 and 1,647.10 is: 2,470.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.40 : 2,507.10 = 1,647.10 : x
  2. Step 2: Convert to fraction form
    1,671.40/2,507.10 = 1,647.10/x
  3. Step 3: Cross multiply
    1,671.40x = 2,507.10 × 1,647.10
  4. Step 4: Simplify right side
    1,671.40x = 4,129,444.41
  5. Step 5: Solve for x
    x = 4,129,444.41/1,671.40
  6. Step 6: Final answer
    x = 2,470.65

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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.