Home / 5,619.02-8,428.28-1,921.58

Finding the Fourth Proportional to 5,619.02, 8,428.28 and 1,921.58

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Solution

The fourth proportional to 5,619.02, 8,428.28 and 1,921.58 is: 2,882.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.02 : 8,428.28 = 1,921.58 : x
  2. Step 2: Convert to fraction form
    5,619.02/8,428.28 = 1,921.58/x
  3. Step 3: Cross multiply
    5,619.02x = 8,428.28 × 1,921.58
  4. Step 4: Simplify right side
    5,619.02x = 16,195,614.28
  5. Step 5: Solve for x
    x = 16,195,614.28/5,619.02
  6. Step 6: Final answer
    x = 2,882.28

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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.