Home / 1,605.51-2,401.90-1,216.64

Finding the Fourth Proportional to 1,605.51, 2,401.90 and 1,216.64

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Solution

The fourth proportional to 1,605.51, 2,401.90 and 1,216.64 is: 1,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.51 : 2,401.90 = 1,216.64 : x
  2. Step 2: Convert to fraction form
    1,605.51/2,401.90 = 1,216.64/x
  3. Step 3: Cross multiply
    1,605.51x = 2,401.90 × 1,216.64
  4. Step 4: Simplify right side
    1,605.51x = 2,922,250.58
  5. Step 5: Solve for x
    x = 2,922,250.58/1,605.51
  6. Step 6: Final answer
    x = 1,820.14

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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.