Home / 1,639.28-2,456.36-1,030

Finding the Fourth Proportional to 1,639.28, 2,456.36 and 1,030

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Solution

The fourth proportional to 1,639.28, 2,456.36 and 1,030 is: 1,543.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.28 : 2,456.36 = 1,030 : x
  2. Step 2: Convert to fraction form
    1,639.28/2,456.36 = 1,030/x
  3. Step 3: Cross multiply
    1,639.28x = 2,456.36 × 1,030
  4. Step 4: Simplify right side
    1,639.28x = 2,530,050.80
  5. Step 5: Solve for x
    x = 2,530,050.80/1,639.28
  6. Step 6: Final answer
    x = 1,543.39

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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.