Home / 8,428.40-12,643.80-2,583.92

Finding the Fourth Proportional to 8,428.40, 12,643.80 and 2,583.92

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Solution

The fourth proportional to 8,428.40, 12,643.80 and 2,583.92 is: 3,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.40 : 12,643.80 = 2,583.92 : x
  2. Step 2: Convert to fraction form
    8,428.40/12,643.80 = 2,583.92/x
  3. Step 3: Cross multiply
    8,428.40x = 12,643.80 × 2,583.92
  4. Step 4: Simplify right side
    8,428.40x = 32,670,567.70
  5. Step 5: Solve for x
    x = 32,670,567.70/8,428.40
  6. Step 6: Final answer
    x = 3,876.25

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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.