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Finding the Fourth Proportional to 2,699.56, 4,047.05 and 1,055.67

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Solution

The fourth proportional to 2,699.56, 4,047.05 and 1,055.67 is: 1,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.56 : 4,047.05 = 1,055.67 : x
  2. Step 2: Convert to fraction form
    2,699.56/4,047.05 = 1,055.67/x
  3. Step 3: Cross multiply
    2,699.56x = 4,047.05 × 1,055.67
  4. Step 4: Simplify right side
    2,699.56x = 4,272,329.04
  5. Step 5: Solve for x
    x = 4,272,329.04/2,699.56
  6. Step 6: Final answer
    x = 1,582.60

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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.