Home / 1,291.18-1,778.23-1,054.03

Finding the Fourth Proportional to 1,291.18, 1,778.23 and 1,054.03

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Solution

The fourth proportional to 1,291.18, 1,778.23 and 1,054.03 is: 1,451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.18 : 1,778.23 = 1,054.03 : x
  2. Step 2: Convert to fraction form
    1,291.18/1,778.23 = 1,054.03/x
  3. Step 3: Cross multiply
    1,291.18x = 1,778.23 × 1,054.03
  4. Step 4: Simplify right side
    1,291.18x = 1,874,307.77
  5. Step 5: Solve for x
    x = 1,874,307.77/1,291.18
  6. Step 6: Final answer
    x = 1,451.62

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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.