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Finding the Fourth Proportional to 2,739.48, 3,779.80 and 1,560.48

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Solution

The fourth proportional to 2,739.48, 3,779.80 and 1,560.48 is: 2,153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.48 : 3,779.80 = 1,560.48 : x
  2. Step 2: Convert to fraction form
    2,739.48/3,779.80 = 1,560.48/x
  3. Step 3: Cross multiply
    2,739.48x = 3,779.80 × 1,560.48
  4. Step 4: Simplify right side
    2,739.48x = 5,898,302.30
  5. Step 5: Solve for x
    x = 5,898,302.30/2,739.48
  6. Step 6: Final answer
    x = 2,153.07

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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.