Home / 7,185.88-10,779.24-1,920.76

Finding the Fourth Proportional to 7,185.88, 10,779.24 and 1,920.76

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Solution

The fourth proportional to 7,185.88, 10,779.24 and 1,920.76 is: 2,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,185.88 : 10,779.24 = 1,920.76 : x
  2. Step 2: Convert to fraction form
    7,185.88/10,779.24 = 1,920.76/x
  3. Step 3: Cross multiply
    7,185.88x = 10,779.24 × 1,920.76
  4. Step 4: Simplify right side
    7,185.88x = 20,704,333.02
  5. Step 5: Solve for x
    x = 20,704,333.02/7,185.88
  6. Step 6: Final answer
    x = 2,881.25

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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.