Home / 1,561.74-2,154.45-1,090.73

Finding the Fourth Proportional to 1,561.74, 2,154.45 and 1,090.73

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Solution

The fourth proportional to 1,561.74, 2,154.45 and 1,090.73 is: 1,504.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.74 : 2,154.45 = 1,090.73 : x
  2. Step 2: Convert to fraction form
    1,561.74/2,154.45 = 1,090.73/x
  3. Step 3: Cross multiply
    1,561.74x = 2,154.45 × 1,090.73
  4. Step 4: Simplify right side
    1,561.74x = 2,349,923.25
  5. Step 5: Solve for x
    x = 2,349,923.25/1,561.74
  6. Step 6: Final answer
    x = 1,504.68

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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.