Home / 2,858.40-4,284.36-1,815.84

Finding the Fourth Proportional to 2,858.40, 4,284.36 and 1,815.84

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Solution

The fourth proportional to 2,858.40, 4,284.36 and 1,815.84 is: 2,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.40 : 4,284.36 = 1,815.84 : x
  2. Step 2: Convert to fraction form
    2,858.40/4,284.36 = 1,815.84/x
  3. Step 3: Cross multiply
    2,858.40x = 4,284.36 × 1,815.84
  4. Step 4: Simplify right side
    2,858.40x = 7,779,712.26
  5. Step 5: Solve for x
    x = 7,779,712.26/2,858.40
  6. Step 6: Final answer
    x = 2,721.70

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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.