Home / 2,117.61-2,922.29-1,186.11

Finding the Fourth Proportional to 2,117.61, 2,922.29 and 1,186.11

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Solution

The fourth proportional to 2,117.61, 2,922.29 and 1,186.11 is: 1,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.61 : 2,922.29 = 1,186.11 : x
  2. Step 2: Convert to fraction form
    2,117.61/2,922.29 = 1,186.11/x
  3. Step 3: Cross multiply
    2,117.61x = 2,922.29 × 1,186.11
  4. Step 4: Simplify right side
    2,117.61x = 3,466,162.58
  5. Step 5: Solve for x
    x = 3,466,162.58/2,117.61
  6. Step 6: Final answer
    x = 1,636.83

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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.