Home / 1,266.30-1,897.29-1,071.90

Finding the Fourth Proportional to 1,266.30, 1,897.29 and 1,071.90

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Solution

The fourth proportional to 1,266.30, 1,897.29 and 1,071.90 is: 1,606.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.30 : 1,897.29 = 1,071.90 : x
  2. Step 2: Convert to fraction form
    1,266.30/1,897.29 = 1,071.90/x
  3. Step 3: Cross multiply
    1,266.30x = 1,897.29 × 1,071.90
  4. Step 4: Simplify right side
    1,266.30x = 2,033,705.15
  5. Step 5: Solve for x
    x = 2,033,705.15/1,266.30
  6. Step 6: Final answer
    x = 1,606.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.