Home / 1,910.51-2,636.62-1,071.20

Finding the Fourth Proportional to 1,910.51, 2,636.62 and 1,071.20

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Solution

The fourth proportional to 1,910.51, 2,636.62 and 1,071.20 is: 1,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.51 : 2,636.62 = 1,071.20 : x
  2. Step 2: Convert to fraction form
    1,910.51/2,636.62 = 1,071.20/x
  3. Step 3: Cross multiply
    1,910.51x = 2,636.62 × 1,071.20
  4. Step 4: Simplify right side
    1,910.51x = 2,824,334.16
  5. Step 5: Solve for x
    x = 2,824,334.16/1,910.51
  6. Step 6: Final answer
    x = 1,478.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.