Home / 4,990.68-7,480.08-3,137.40

Finding the Fourth Proportional to 4,990.68, 7,480.08 and 3,137.40

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Solution

The fourth proportional to 4,990.68, 7,480.08 and 3,137.40 is: 4,702.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.68 : 7,480.08 = 3,137.40 : x
  2. Step 2: Convert to fraction form
    4,990.68/7,480.08 = 3,137.40/x
  3. Step 3: Cross multiply
    4,990.68x = 7,480.08 × 3,137.40
  4. Step 4: Simplify right side
    4,990.68x = 23,468,002.99
  5. Step 5: Solve for x
    x = 23,468,002.99/4,990.68
  6. Step 6: Final answer
    x = 4,702.37

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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.