Home / 4,972.15-7,458.45-2,779.21

Finding the Fourth Proportional to 4,972.15, 7,458.45 and 2,779.21

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Solution

The fourth proportional to 4,972.15, 7,458.45 and 2,779.21 is: 4,168.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.15 : 7,458.45 = 2,779.21 : x
  2. Step 2: Convert to fraction form
    4,972.15/7,458.45 = 2,779.21/x
  3. Step 3: Cross multiply
    4,972.15x = 7,458.45 × 2,779.21
  4. Step 4: Simplify right side
    4,972.15x = 20,728,598.82
  5. Step 5: Solve for x
    x = 20,728,598.82/4,972.15
  6. Step 6: Final answer
    x = 4,168.94

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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.