Home / 1,855.30-2,560.88-1,147.36

Finding the Fourth Proportional to 1,855.30, 2,560.88 and 1,147.36

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Solution

The fourth proportional to 1,855.30, 2,560.88 and 1,147.36 is: 1,583.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.30 : 2,560.88 = 1,147.36 : x
  2. Step 2: Convert to fraction form
    1,855.30/2,560.88 = 1,147.36/x
  3. Step 3: Cross multiply
    1,855.30x = 2,560.88 × 1,147.36
  4. Step 4: Simplify right side
    1,855.30x = 2,938,251.28
  5. Step 5: Solve for x
    x = 2,938,251.28/1,855.30
  6. Step 6: Final answer
    x = 1,583.71

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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.