Home / 4,990.79-7,442.15-4,745.52

Finding the Fourth Proportional to 4,990.79, 7,442.15 and 4,745.52

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Solution

The fourth proportional to 4,990.79, 7,442.15 and 4,745.52 is: 7,076.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.79 : 7,442.15 = 4,745.52 : x
  2. Step 2: Convert to fraction form
    4,990.79/7,442.15 = 4,745.52/x
  3. Step 3: Cross multiply
    4,990.79x = 7,442.15 × 4,745.52
  4. Step 4: Simplify right side
    4,990.79x = 35,316,911.44
  5. Step 5: Solve for x
    x = 35,316,911.44/4,990.79
  6. Step 6: Final answer
    x = 7,076.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.