Home / 2,875.97-3,968.56-1,681.23

Finding the Fourth Proportional to 2,875.97, 3,968.56 and 1,681.23

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Solution

The fourth proportional to 2,875.97, 3,968.56 and 1,681.23 is: 2,319.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.97 : 3,968.56 = 1,681.23 : x
  2. Step 2: Convert to fraction form
    2,875.97/3,968.56 = 1,681.23/x
  3. Step 3: Cross multiply
    2,875.97x = 3,968.56 × 1,681.23
  4. Step 4: Simplify right side
    2,875.97x = 6,672,072.05
  5. Step 5: Solve for x
    x = 6,672,072.05/2,875.97
  6. Step 6: Final answer
    x = 2,319.94

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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.