Home / 1,635.15-2,257.79-1,005.98

Finding the Fourth Proportional to 1,635.15, 2,257.79 and 1,005.98

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Solution

The fourth proportional to 1,635.15, 2,257.79 and 1,005.98 is: 1,389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.15 : 2,257.79 = 1,005.98 : x
  2. Step 2: Convert to fraction form
    1,635.15/2,257.79 = 1,005.98/x
  3. Step 3: Cross multiply
    1,635.15x = 2,257.79 × 1,005.98
  4. Step 4: Simplify right side
    1,635.15x = 2,271,275.27
  5. Step 5: Solve for x
    x = 2,271,275.27/1,635.15
  6. Step 6: Final answer
    x = 1,389.03

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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.