Home / 7,021.87-10,533.88-2,639.63

Finding the Fourth Proportional to 7,021.87, 10,533.88 and 2,639.63

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Solution

The fourth proportional to 7,021.87, 10,533.88 and 2,639.63 is: 3,959.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.87 : 10,533.88 = 2,639.63 : x
  2. Step 2: Convert to fraction form
    7,021.87/10,533.88 = 2,639.63/x
  3. Step 3: Cross multiply
    7,021.87x = 10,533.88 × 2,639.63
  4. Step 4: Simplify right side
    7,021.87x = 27,805,545.66
  5. Step 5: Solve for x
    x = 27,805,545.66/7,021.87
  6. Step 6: Final answer
    x = 3,959.85

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1.5x scale

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.