Home / 1,456.92-2,172.45-1,284.24

Finding the Fourth Proportional to 1,456.92, 2,172.45 and 1,284.24

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Solution

The fourth proportional to 1,456.92, 2,172.45 and 1,284.24 is: 1,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.92 : 2,172.45 = 1,284.24 : x
  2. Step 2: Convert to fraction form
    1,456.92/2,172.45 = 1,284.24/x
  3. Step 3: Cross multiply
    1,456.92x = 2,172.45 × 1,284.24
  4. Step 4: Simplify right side
    1,456.92x = 2,789,947.19
  5. Step 5: Solve for x
    x = 2,789,947.19/1,456.92
  6. Step 6: Final answer
    x = 1,914.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.