Home / 3,038.80-4,558.20-2,115.40

Finding the Fourth Proportional to 3,038.80, 4,558.20 and 2,115.40

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Solution

The fourth proportional to 3,038.80, 4,558.20 and 2,115.40 is: 3,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.80 : 4,558.20 = 2,115.40 : x
  2. Step 2: Convert to fraction form
    3,038.80/4,558.20 = 2,115.40/x
  3. Step 3: Cross multiply
    3,038.80x = 4,558.20 × 2,115.40
  4. Step 4: Simplify right side
    3,038.80x = 9,642,416.28
  5. Step 5: Solve for x
    x = 9,642,416.28/3,038.80
  6. Step 6: Final answer
    x = 3,173.10

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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.