Home / 4,742.50-7,115.79-1,820.44

Finding the Fourth Proportional to 4,742.50, 7,115.79 and 1,820.44

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Solution

The fourth proportional to 4,742.50, 7,115.79 and 1,820.44 is: 2,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.50 : 7,115.79 = 1,820.44 : x
  2. Step 2: Convert to fraction form
    4,742.50/7,115.79 = 1,820.44/x
  3. Step 3: Cross multiply
    4,742.50x = 7,115.79 × 1,820.44
  4. Step 4: Simplify right side
    4,742.50x = 12,953,868.75
  5. Step 5: Solve for x
    x = 12,953,868.75/4,742.50
  6. Step 6: Final answer
    x = 2,731.44

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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.