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Finding the Fourth Proportional to 2,655.77, 3,985.55 and 1,779.94

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Solution

The fourth proportional to 2,655.77, 3,985.55 and 1,779.94 is: 2,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.77 : 3,985.55 = 1,779.94 : x
  2. Step 2: Convert to fraction form
    2,655.77/3,985.55 = 1,779.94/x
  3. Step 3: Cross multiply
    2,655.77x = 3,985.55 × 1,779.94
  4. Step 4: Simplify right side
    2,655.77x = 7,094,034.35
  5. Step 5: Solve for x
    x = 7,094,034.35/2,655.77
  6. Step 6: Final answer
    x = 2,671.18

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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.