Home / 2,520.45-3,478.21-1,401.35

Finding the Fourth Proportional to 2,520.45, 3,478.21 and 1,401.35

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Solution

The fourth proportional to 2,520.45, 3,478.21 and 1,401.35 is: 1,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.45 : 3,478.21 = 1,401.35 : x
  2. Step 2: Convert to fraction form
    2,520.45/3,478.21 = 1,401.35/x
  3. Step 3: Cross multiply
    2,520.45x = 3,478.21 × 1,401.35
  4. Step 4: Simplify right side
    2,520.45x = 4,874,165.19
  5. Step 5: Solve for x
    x = 4,874,165.19/2,520.45
  6. Step 6: Final answer
    x = 1,933.85

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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.