Home / 4,779.45-7,168.35-1,315.89

Finding the Fourth Proportional to 4,779.45, 7,168.35 and 1,315.89

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Solution

The fourth proportional to 4,779.45, 7,168.35 and 1,315.89 is: 1,973.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.45 : 7,168.35 = 1,315.89 : x
  2. Step 2: Convert to fraction form
    4,779.45/7,168.35 = 1,315.89/x
  3. Step 3: Cross multiply
    4,779.45x = 7,168.35 × 1,315.89
  4. Step 4: Simplify right side
    4,779.45x = 9,432,760.08
  5. Step 5: Solve for x
    x = 9,432,760.08/4,779.45
  6. Step 6: Final answer
    x = 1,973.61

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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.