Home / 2,164.68-2,987.09-1,325.04

Finding the Fourth Proportional to 2,164.68, 2,987.09 and 1,325.04

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Solution

The fourth proportional to 2,164.68, 2,987.09 and 1,325.04 is: 1,828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.68 : 2,987.09 = 1,325.04 : x
  2. Step 2: Convert to fraction form
    2,164.68/2,987.09 = 1,325.04/x
  3. Step 3: Cross multiply
    2,164.68x = 2,987.09 × 1,325.04
  4. Step 4: Simplify right side
    2,164.68x = 3,958,013.73
  5. Step 5: Solve for x
    x = 3,958,013.73/2,164.68
  6. Step 6: Final answer
    x = 1,828.45

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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.