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Finding the Fourth Proportional to 1,672.10, 2,513.55 and 1,574.90

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Solution

The fourth proportional to 1,672.10, 2,513.55 and 1,574.90 is: 2,367.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.10 : 2,513.55 = 1,574.90 : x
  2. Step 2: Convert to fraction form
    1,672.10/2,513.55 = 1,574.90/x
  3. Step 3: Cross multiply
    1,672.10x = 2,513.55 × 1,574.90
  4. Step 4: Simplify right side
    1,672.10x = 3,958,589.90
  5. Step 5: Solve for x
    x = 3,958,589.90/1,672.10
  6. Step 6: Final answer
    x = 2,367.44

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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.