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Finding the Fourth Proportional to 3,779.76, 5,216.76 and 2,950.32

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Solution

The fourth proportional to 3,779.76, 5,216.76 and 2,950.32 is: 4,071.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.76 : 5,216.76 = 2,950.32 : x
  2. Step 2: Convert to fraction form
    3,779.76/5,216.76 = 2,950.32/x
  3. Step 3: Cross multiply
    3,779.76x = 5,216.76 × 2,950.32
  4. Step 4: Simplify right side
    3,779.76x = 15,391,111.36
  5. Step 5: Solve for x
    x = 15,391,111.36/3,779.76
  6. Step 6: Final answer
    x = 4,071.98

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1.5x scale

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.