Home / 4,985.30-6,872.19-4,099.56

Finding the Fourth Proportional to 4,985.30, 6,872.19 and 4,099.56

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Solution

The fourth proportional to 4,985.30, 6,872.19 and 4,099.56 is: 5,651.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.30 : 6,872.19 = 4,099.56 : x
  2. Step 2: Convert to fraction form
    4,985.30/6,872.19 = 4,099.56/x
  3. Step 3: Cross multiply
    4,985.30x = 6,872.19 × 4,099.56
  4. Step 4: Simplify right side
    4,985.30x = 28,172,955.24
  5. Step 5: Solve for x
    x = 28,172,955.24/4,985.30
  6. Step 6: Final answer
    x = 5,651.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.