Home / 1,621.51-2,238.20-1,061.09

Finding the Fourth Proportional to 1,621.51, 2,238.20 and 1,061.09

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Solution

The fourth proportional to 1,621.51, 2,238.20 and 1,061.09 is: 1,464.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.51 : 2,238.20 = 1,061.09 : x
  2. Step 2: Convert to fraction form
    1,621.51/2,238.20 = 1,061.09/x
  3. Step 3: Cross multiply
    1,621.51x = 2,238.20 × 1,061.09
  4. Step 4: Simplify right side
    1,621.51x = 2,374,931.64
  5. Step 5: Solve for x
    x = 2,374,931.64/1,621.51
  6. Step 6: Final answer
    x = 1,464.64

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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.