Home / 5,259.47-7,883.57-2,621.78

Finding the Fourth Proportional to 5,259.47, 7,883.57 and 2,621.78

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Solution

The fourth proportional to 5,259.47, 7,883.57 and 2,621.78 is: 3,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,259.47 : 7,883.57 = 2,621.78 : x
  2. Step 2: Convert to fraction form
    5,259.47/7,883.57 = 2,621.78/x
  3. Step 3: Cross multiply
    5,259.47x = 7,883.57 × 2,621.78
  4. Step 4: Simplify right side
    5,259.47x = 20,668,933.63
  5. Step 5: Solve for x
    x = 20,668,933.63/5,259.47
  6. Step 6: Final answer
    x = 3,929.85

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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.