Home / 2,165.19-2,988.32-1,609.35

Finding the Fourth Proportional to 2,165.19, 2,988.32 and 1,609.35

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Solution

The fourth proportional to 2,165.19, 2,988.32 and 1,609.35 is: 2,221.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.19 : 2,988.32 = 1,609.35 : x
  2. Step 2: Convert to fraction form
    2,165.19/2,988.32 = 1,609.35/x
  3. Step 3: Cross multiply
    2,165.19x = 2,988.32 × 1,609.35
  4. Step 4: Simplify right side
    2,165.19x = 4,809,244.75
  5. Step 5: Solve for x
    x = 4,809,244.75/2,165.19
  6. Step 6: Final answer
    x = 2,221.17

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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.