Home / 1,636.12-2,450.76-986.50

Finding the Fourth Proportional to 1,636.12, 2,450.76 and 986.50

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Solution

The fourth proportional to 1,636.12, 2,450.76 and 986.50 is: 1,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.12 : 2,450.76 = 986.50 : x
  2. Step 2: Convert to fraction form
    1,636.12/2,450.76 = 986.50/x
  3. Step 3: Cross multiply
    1,636.12x = 2,450.76 × 986.50
  4. Step 4: Simplify right side
    1,636.12x = 2,417,674.74
  5. Step 5: Solve for x
    x = 2,417,674.74/1,636.12
  6. Step 6: Final answer
    x = 1,477.69

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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.