Home / 1,745.20-2,405.46-1,325.08

Finding the Fourth Proportional to 1,745.20, 2,405.46 and 1,325.08

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Solution

The fourth proportional to 1,745.20, 2,405.46 and 1,325.08 is: 1,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.20 : 2,405.46 = 1,325.08 : x
  2. Step 2: Convert to fraction form
    1,745.20/2,405.46 = 1,325.08/x
  3. Step 3: Cross multiply
    1,745.20x = 2,405.46 × 1,325.08
  4. Step 4: Simplify right side
    1,745.20x = 3,187,426.94
  5. Step 5: Solve for x
    x = 3,187,426.94/1,745.20
  6. Step 6: Final answer
    x = 1,826.40

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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.