Home / 1,621.84-2,431.32-1,210.48

Finding the Fourth Proportional to 1,621.84, 2,431.32 and 1,210.48

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Solution

The fourth proportional to 1,621.84, 2,431.32 and 1,210.48 is: 1,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.84 : 2,431.32 = 1,210.48 : x
  2. Step 2: Convert to fraction form
    1,621.84/2,431.32 = 1,210.48/x
  3. Step 3: Cross multiply
    1,621.84x = 2,431.32 × 1,210.48
  4. Step 4: Simplify right side
    1,621.84x = 2,943,064.23
  5. Step 5: Solve for x
    x = 2,943,064.23/1,621.84
  6. Step 6: Final answer
    x = 1,814.65

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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.