Home / 7,803.85-11,700.30-2,872.84

Finding the Fourth Proportional to 7,803.85, 11,700.30 and 2,872.84

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Solution

The fourth proportional to 7,803.85, 11,700.30 and 2,872.84 is: 4,307.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.85 : 11,700.30 = 2,872.84 : x
  2. Step 2: Convert to fraction form
    7,803.85/11,700.30 = 2,872.84/x
  3. Step 3: Cross multiply
    7,803.85x = 11,700.30 × 2,872.84
  4. Step 4: Simplify right side
    7,803.85x = 33,613,089.85
  5. Step 5: Solve for x
    x = 33,613,089.85/7,803.85
  6. Step 6: Final answer
    x = 4,307.24

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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.