Home / 2,161.80-2,984.40-1,653.66

Finding the Fourth Proportional to 2,161.80, 2,984.40 and 1,653.66

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Solution

The fourth proportional to 2,161.80, 2,984.40 and 1,653.66 is: 2,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.80 : 2,984.40 = 1,653.66 : x
  2. Step 2: Convert to fraction form
    2,161.80/2,984.40 = 1,653.66/x
  3. Step 3: Cross multiply
    2,161.80x = 2,984.40 × 1,653.66
  4. Step 4: Simplify right side
    2,161.80x = 4,935,182.90
  5. Step 5: Solve for x
    x = 4,935,182.90/2,161.80
  6. Step 6: Final answer
    x = 2,282.90

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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.