Home / 2,165.22-2,988.01-1,170.50

Finding the Fourth Proportional to 2,165.22, 2,988.01 and 1,170.50

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Solution

The fourth proportional to 2,165.22, 2,988.01 and 1,170.50 is: 1,615.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.22 : 2,988.01 = 1,170.50 : x
  2. Step 2: Convert to fraction form
    2,165.22/2,988.01 = 1,170.50/x
  3. Step 3: Cross multiply
    2,165.22x = 2,988.01 × 1,170.50
  4. Step 4: Simplify right side
    2,165.22x = 3,497,465.71
  5. Step 5: Solve for x
    x = 3,497,465.71/2,165.22
  6. Step 6: Final answer
    x = 1,615.29

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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.