Home / 2,520.75-3,478.55-1,401.66

Finding the Fourth Proportional to 2,520.75, 3,478.55 and 1,401.66

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Solution

The fourth proportional to 2,520.75, 3,478.55 and 1,401.66 is: 1,934.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.75 : 3,478.55 = 1,401.66 : x
  2. Step 2: Convert to fraction form
    2,520.75/3,478.55 = 1,401.66/x
  3. Step 3: Cross multiply
    2,520.75x = 3,478.55 × 1,401.66
  4. Step 4: Simplify right side
    2,520.75x = 4,875,737.38
  5. Step 5: Solve for x
    x = 4,875,737.38/2,520.75
  6. Step 6: Final answer
    x = 1,934.24

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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.