Home / 1,445.39-2,157.63-1,270.23

Finding the Fourth Proportional to 1,445.39, 2,157.63 and 1,270.23

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Solution

The fourth proportional to 1,445.39, 2,157.63 and 1,270.23 is: 1,896.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.39 : 2,157.63 = 1,270.23 : x
  2. Step 2: Convert to fraction form
    1,445.39/2,157.63 = 1,270.23/x
  3. Step 3: Cross multiply
    1,445.39x = 2,157.63 × 1,270.23
  4. Step 4: Simplify right side
    1,445.39x = 2,740,680.00
  5. Step 5: Solve for x
    x = 2,740,680.00/1,445.39
  6. Step 6: Final answer
    x = 1,896.15

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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.