Home / 5,619.32-8,428.98-1,921.58

Finding the Fourth Proportional to 5,619.32, 8,428.98 and 1,921.58

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Solution

The fourth proportional to 5,619.32, 8,428.98 and 1,921.58 is: 2,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.32 : 8,428.98 = 1,921.58 : x
  2. Step 2: Convert to fraction form
    5,619.32/8,428.98 = 1,921.58/x
  3. Step 3: Cross multiply
    5,619.32x = 8,428.98 × 1,921.58
  4. Step 4: Simplify right side
    5,619.32x = 16,196,959.39
  5. Step 5: Solve for x
    x = 16,196,959.39/5,619.32
  6. Step 6: Final answer
    x = 2,882.37

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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.