Home / 1,204.35-1,660.74-1,071.72

Finding the Fourth Proportional to 1,204.35, 1,660.74 and 1,071.72

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Solution

The fourth proportional to 1,204.35, 1,660.74 and 1,071.72 is: 1,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.35 : 1,660.74 = 1,071.72 : x
  2. Step 2: Convert to fraction form
    1,204.35/1,660.74 = 1,071.72/x
  3. Step 3: Cross multiply
    1,204.35x = 1,660.74 × 1,071.72
  4. Step 4: Simplify right side
    1,204.35x = 1,779,848.27
  5. Step 5: Solve for x
    x = 1,779,848.27/1,204.35
  6. Step 6: Final answer
    x = 1,477.85

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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.