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Finding the Fourth Proportional to 4,779.87, 7,165.50 and 1,857.48

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Solution

The fourth proportional to 4,779.87, 7,165.50 and 1,857.48 is: 2,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.87 : 7,165.50 = 1,857.48 : x
  2. Step 2: Convert to fraction form
    4,779.87/7,165.50 = 1,857.48/x
  3. Step 3: Cross multiply
    4,779.87x = 7,165.50 × 1,857.48
  4. Step 4: Simplify right side
    4,779.87x = 13,309,772.94
  5. Step 5: Solve for x
    x = 13,309,772.94/4,779.87
  6. Step 6: Final answer
    x = 2,784.55

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1.5x scale

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.