Home / 1,486.10-2,228.78-619.58

Finding the Fourth Proportional to 1,486.10, 2,228.78 and 619.58

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Solution

The fourth proportional to 1,486.10, 2,228.78 and 619.58 is: 929.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.10 : 2,228.78 = 619.58 : x
  2. Step 2: Convert to fraction form
    1,486.10/2,228.78 = 619.58/x
  3. Step 3: Cross multiply
    1,486.10x = 2,228.78 × 619.58
  4. Step 4: Simplify right side
    1,486.10x = 1,380,907.51
  5. Step 5: Solve for x
    x = 1,380,907.51/1,486.10
  6. Step 6: Final answer
    x = 929.22

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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.