Home / 1,878.19-2,817.59-579.96

Finding the Fourth Proportional to 1,878.19, 2,817.59 and 579.96

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Solution

The fourth proportional to 1,878.19, 2,817.59 and 579.96 is: 870.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.19 : 2,817.59 = 579.96 : x
  2. Step 2: Convert to fraction form
    1,878.19/2,817.59 = 579.96/x
  3. Step 3: Cross multiply
    1,878.19x = 2,817.59 × 579.96
  4. Step 4: Simplify right side
    1,878.19x = 1,634,086.60
  5. Step 5: Solve for x
    x = 1,634,086.60/1,878.19
  6. Step 6: Final answer
    x = 870.03

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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.