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Finding the Fourth Proportional to 1,855.99, 2,560.29 and 1,258.52

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Solution

The fourth proportional to 1,855.99, 2,560.29 and 1,258.52 is: 1,736.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.99 : 2,560.29 = 1,258.52 : x
  2. Step 2: Convert to fraction form
    1,855.99/2,560.29 = 1,258.52/x
  3. Step 3: Cross multiply
    1,855.99x = 2,560.29 × 1,258.52
  4. Step 4: Simplify right side
    1,855.99x = 3,222,176.17
  5. Step 5: Solve for x
    x = 3,222,176.17/1,855.99
  6. Step 6: Final answer
    x = 1,736.10

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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.