Home / 2,578.40-3,875.70-2,529.80

Finding the Fourth Proportional to 2,578.40, 3,875.70 and 2,529.80

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Solution

The fourth proportional to 2,578.40, 3,875.70 and 2,529.80 is: 3,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.40 : 3,875.70 = 2,529.80 : x
  2. Step 2: Convert to fraction form
    2,578.40/3,875.70 = 2,529.80/x
  3. Step 3: Cross multiply
    2,578.40x = 3,875.70 × 2,529.80
  4. Step 4: Simplify right side
    2,578.40x = 9,804,745.86
  5. Step 5: Solve for x
    x = 9,804,745.86/2,578.40
  6. Step 6: Final answer
    x = 3,802.65

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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.