Home / 4,990.30-7,477.35-3,138.10

Finding the Fourth Proportional to 4,990.30, 7,477.35 and 3,138.10

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Solution

The fourth proportional to 4,990.30, 7,477.35 and 3,138.10 is: 4,702.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.30 : 7,477.35 = 3,138.10 : x
  2. Step 2: Convert to fraction form
    4,990.30/7,477.35 = 3,138.10/x
  3. Step 3: Cross multiply
    4,990.30x = 7,477.35 × 3,138.10
  4. Step 4: Simplify right side
    4,990.30x = 23,464,672.04
  5. Step 5: Solve for x
    x = 23,464,672.04/4,990.30
  6. Step 6: Final answer
    x = 4,702.06

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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.