Home / 4,775.20-7,162.26-1,312

Finding the Fourth Proportional to 4,775.20, 7,162.26 and 1,312

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Solution

The fourth proportional to 4,775.20, 7,162.26 and 1,312 is: 1,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,775.20 : 7,162.26 = 1,312 : x
  2. Step 2: Convert to fraction form
    4,775.20/7,162.26 = 1,312/x
  3. Step 3: Cross multiply
    4,775.20x = 7,162.26 × 1,312
  4. Step 4: Simplify right side
    4,775.20x = 9,396,885.12
  5. Step 5: Solve for x
    x = 9,396,885.12/4,775.20
  6. Step 6: Final answer
    x = 1,967.85

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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.