Home / 1,325.38-1,827.41-1,145.60

Finding the Fourth Proportional to 1,325.38, 1,827.41 and 1,145.60

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Solution

The fourth proportional to 1,325.38, 1,827.41 and 1,145.60 is: 1,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.38 : 1,827.41 = 1,145.60 : x
  2. Step 2: Convert to fraction form
    1,325.38/1,827.41 = 1,145.60/x
  3. Step 3: Cross multiply
    1,325.38x = 1,827.41 × 1,145.60
  4. Step 4: Simplify right side
    1,325.38x = 2,093,482.55
  5. Step 5: Solve for x
    x = 2,093,482.55/1,325.38
  6. Step 6: Final answer
    x = 1,579.54

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Double scale
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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.