Home / 2,154.25-2,973.05-1,222.93

Finding the Fourth Proportional to 2,154.25, 2,973.05 and 1,222.93

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Solution

The fourth proportional to 2,154.25, 2,973.05 and 1,222.93 is: 1,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.25 : 2,973.05 = 1,222.93 : x
  2. Step 2: Convert to fraction form
    2,154.25/2,973.05 = 1,222.93/x
  3. Step 3: Cross multiply
    2,154.25x = 2,973.05 × 1,222.93
  4. Step 4: Simplify right side
    2,154.25x = 3,635,832.04
  5. Step 5: Solve for x
    x = 3,635,832.04/2,154.25
  6. Step 6: Final answer
    x = 1,687.75

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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.