Home / 2,420.85-3,341.31-1,536.49

Finding the Fourth Proportional to 2,420.85, 3,341.31 and 1,536.49

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Solution

The fourth proportional to 2,420.85, 3,341.31 and 1,536.49 is: 2,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.85 : 3,341.31 = 1,536.49 : x
  2. Step 2: Convert to fraction form
    2,420.85/3,341.31 = 1,536.49/x
  3. Step 3: Cross multiply
    2,420.85x = 3,341.31 × 1,536.49
  4. Step 4: Simplify right side
    2,420.85x = 5,133,872.70
  5. Step 5: Solve for x
    x = 5,133,872.70/2,420.85
  6. Step 6: Final answer
    x = 2,120.69

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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.