Home / 1,621.24-2,428.34-1,005.10

Finding the Fourth Proportional to 1,621.24, 2,428.34 and 1,005.10

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Solution

The fourth proportional to 1,621.24, 2,428.34 and 1,005.10 is: 1,505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.24 : 2,428.34 = 1,005.10 : x
  2. Step 2: Convert to fraction form
    1,621.24/2,428.34 = 1,005.10/x
  3. Step 3: Cross multiply
    1,621.24x = 2,428.34 × 1,005.10
  4. Step 4: Simplify right side
    1,621.24x = 2,440,724.53
  5. Step 5: Solve for x
    x = 2,440,724.53/1,621.24
  6. Step 6: Final answer
    x = 1,505.47

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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.