Home / 1,458.58-2,172.94-1,388.92

Finding the Fourth Proportional to 1,458.58, 2,172.94 and 1,388.92

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Solution

The fourth proportional to 1,458.58, 2,172.94 and 1,388.92 is: 2,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.58 : 2,172.94 = 1,388.92 : x
  2. Step 2: Convert to fraction form
    1,458.58/2,172.94 = 1,388.92/x
  3. Step 3: Cross multiply
    1,458.58x = 2,172.94 × 1,388.92
  4. Step 4: Simplify right side
    1,458.58x = 3,018,039.82
  5. Step 5: Solve for x
    x = 3,018,039.82/1,458.58
  6. Step 6: Final answer
    x = 2,069.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.