Home / 2,165.40-2,987.55-1,536.03

Finding the Fourth Proportional to 2,165.40, 2,987.55 and 1,536.03

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Solution

The fourth proportional to 2,165.40, 2,987.55 and 1,536.03 is: 2,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.40 : 2,987.55 = 1,536.03 : x
  2. Step 2: Convert to fraction form
    2,165.40/2,987.55 = 1,536.03/x
  3. Step 3: Cross multiply
    2,165.40x = 2,987.55 × 1,536.03
  4. Step 4: Simplify right side
    2,165.40x = 4,588,966.43
  5. Step 5: Solve for x
    x = 4,588,966.43/2,165.40
  6. Step 6: Final answer
    x = 2,119.22

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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.