Home / 3,077.20-4,245.24-2,238.40

Finding the Fourth Proportional to 3,077.20, 4,245.24 and 2,238.40

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Solution

The fourth proportional to 3,077.20, 4,245.24 and 2,238.40 is: 3,088.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.20 : 4,245.24 = 2,238.40 : x
  2. Step 2: Convert to fraction form
    3,077.20/4,245.24 = 2,238.40/x
  3. Step 3: Cross multiply
    3,077.20x = 4,245.24 × 2,238.40
  4. Step 4: Simplify right side
    3,077.20x = 9,502,545.22
  5. Step 5: Solve for x
    x = 9,502,545.22/3,077.20
  6. Step 6: Final answer
    x = 3,088.05

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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.