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Finding the Fourth Proportional to 4,779.70, 7,168.40 and 2,006.42

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Solution

The fourth proportional to 4,779.70, 7,168.40 and 2,006.42 is: 3,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.70 : 7,168.40 = 2,006.42 : x
  2. Step 2: Convert to fraction form
    4,779.70/7,168.40 = 2,006.42/x
  3. Step 3: Cross multiply
    4,779.70x = 7,168.40 × 2,006.42
  4. Step 4: Simplify right side
    4,779.70x = 14,382,782.78
  5. Step 5: Solve for x
    x = 14,382,782.78/4,779.70
  6. Step 6: Final answer
    x = 3,009.14

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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.