Home / 1,783.19-2,458.91-1,224.47

Finding the Fourth Proportional to 1,783.19, 2,458.91 and 1,224.47

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Solution

The fourth proportional to 1,783.19, 2,458.91 and 1,224.47 is: 1,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.19 : 2,458.91 = 1,224.47 : x
  2. Step 2: Convert to fraction form
    1,783.19/2,458.91 = 1,224.47/x
  3. Step 3: Cross multiply
    1,783.19x = 2,458.91 × 1,224.47
  4. Step 4: Simplify right side
    1,783.19x = 3,010,843.11
  5. Step 5: Solve for x
    x = 3,010,843.11/1,783.19
  6. Step 6: Final answer
    x = 1,688.46

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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.