Home / 1,643.78-2,462.93-1,155.80

Finding the Fourth Proportional to 1,643.78, 2,462.93 and 1,155.80

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Solution

The fourth proportional to 1,643.78, 2,462.93 and 1,155.80 is: 1,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.78 : 2,462.93 = 1,155.80 : x
  2. Step 2: Convert to fraction form
    1,643.78/2,462.93 = 1,155.80/x
  3. Step 3: Cross multiply
    1,643.78x = 2,462.93 × 1,155.80
  4. Step 4: Simplify right side
    1,643.78x = 2,846,636.40
  5. Step 5: Solve for x
    x = 2,846,636.40/1,643.78
  6. Step 6: Final answer
    x = 1,731.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.