Home / 2,188.23-3,020.30-1,690.11

Finding the Fourth Proportional to 2,188.23, 3,020.30 and 1,690.11

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Solution

The fourth proportional to 2,188.23, 3,020.30 and 1,690.11 is: 2,332.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.23 : 3,020.30 = 1,690.11 : x
  2. Step 2: Convert to fraction form
    2,188.23/3,020.30 = 1,690.11/x
  3. Step 3: Cross multiply
    2,188.23x = 3,020.30 × 1,690.11
  4. Step 4: Simplify right side
    2,188.23x = 5,104,630.78
  5. Step 5: Solve for x
    x = 5,104,630.78/2,188.23
  6. Step 6: Final answer
    x = 2,332.77

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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.