Home / 2,783.49-3,839.74-1,887.28

Finding the Fourth Proportional to 2,783.49, 3,839.74 and 1,887.28

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Solution

The fourth proportional to 2,783.49, 3,839.74 and 1,887.28 is: 2,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.49 : 3,839.74 = 1,887.28 : x
  2. Step 2: Convert to fraction form
    2,783.49/3,839.74 = 1,887.28/x
  3. Step 3: Cross multiply
    2,783.49x = 3,839.74 × 1,887.28
  4. Step 4: Simplify right side
    2,783.49x = 7,246,664.51
  5. Step 5: Solve for x
    x = 7,246,664.51/2,783.49
  6. Step 6: Final answer
    x = 2,603.45

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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.