Home / 2,127.62-2,936.08-1,231.30

Finding the Fourth Proportional to 2,127.62, 2,936.08 and 1,231.30

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Solution

The fourth proportional to 2,127.62, 2,936.08 and 1,231.30 is: 1,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.62 : 2,936.08 = 1,231.30 : x
  2. Step 2: Convert to fraction form
    2,127.62/2,936.08 = 1,231.30/x
  3. Step 3: Cross multiply
    2,127.62x = 2,936.08 × 1,231.30
  4. Step 4: Simplify right side
    2,127.62x = 3,615,200.51
  5. Step 5: Solve for x
    x = 3,615,200.51/2,127.62
  6. Step 6: Final answer
    x = 1,699.17

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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.