Home / 2,117.56-2,922.18-1,186.12

Finding the Fourth Proportional to 2,117.56, 2,922.18 and 1,186.12

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Solution

The fourth proportional to 2,117.56, 2,922.18 and 1,186.12 is: 1,636.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.56 : 2,922.18 = 1,186.12 : x
  2. Step 2: Convert to fraction form
    2,117.56/2,922.18 = 1,186.12/x
  3. Step 3: Cross multiply
    2,117.56x = 2,922.18 × 1,186.12
  4. Step 4: Simplify right side
    2,117.56x = 3,466,056.14
  5. Step 5: Solve for x
    x = 3,466,056.14/2,117.56
  6. Step 6: Final answer
    x = 1,636.82

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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.