Home / 1,758.07-2,636.90-459.64

Finding the Fourth Proportional to 1,758.07, 2,636.90 and 459.64

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Solution

The fourth proportional to 1,758.07, 2,636.90 and 459.64 is: 689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.07 : 2,636.90 = 459.64 : x
  2. Step 2: Convert to fraction form
    1,758.07/2,636.90 = 459.64/x
  3. Step 3: Cross multiply
    1,758.07x = 2,636.90 × 459.64
  4. Step 4: Simplify right side
    1,758.07x = 1,212,024.72
  5. Step 5: Solve for x
    x = 1,212,024.72/1,758.07
  6. Step 6: Final answer
    x = 689.41

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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.