Home / 5,639.94-7,788.69-4,648.50

Finding the Fourth Proportional to 5,639.94, 7,788.69 and 4,648.50

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Solution

The fourth proportional to 5,639.94, 7,788.69 and 4,648.50 is: 6,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.94 : 7,788.69 = 4,648.50 : x
  2. Step 2: Convert to fraction form
    5,639.94/7,788.69 = 4,648.50/x
  3. Step 3: Cross multiply
    5,639.94x = 7,788.69 × 4,648.50
  4. Step 4: Simplify right side
    5,639.94x = 36,205,725.47
  5. Step 5: Solve for x
    x = 36,205,725.47/5,639.94
  6. Step 6: Final answer
    x = 6,419.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.