Home / 1,607.76-2,221.56-1,261.08

Finding the Fourth Proportional to 1,607.76, 2,221.56 and 1,261.08

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Solution

The fourth proportional to 1,607.76, 2,221.56 and 1,261.08 is: 1,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.76 : 2,221.56 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    1,607.76/2,221.56 = 1,261.08/x
  3. Step 3: Cross multiply
    1,607.76x = 2,221.56 × 1,261.08
  4. Step 4: Simplify right side
    1,607.76x = 2,801,564.88
  5. Step 5: Solve for x
    x = 2,801,564.88/1,607.76
  6. Step 6: Final answer
    x = 1,742.53

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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.