Home / 2,117.22-2,921.75-1,173.09

Finding the Fourth Proportional to 2,117.22, 2,921.75 and 1,173.09

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Solution

The fourth proportional to 2,117.22, 2,921.75 and 1,173.09 is: 1,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.22 : 2,921.75 = 1,173.09 : x
  2. Step 2: Convert to fraction form
    2,117.22/2,921.75 = 1,173.09/x
  3. Step 3: Cross multiply
    2,117.22x = 2,921.75 × 1,173.09
  4. Step 4: Simplify right side
    2,117.22x = 3,427,475.71
  5. Step 5: Solve for x
    x = 3,427,475.71/2,117.22
  6. Step 6: Final answer
    x = 1,618.86

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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.