Home / 3,898.18-5,381.06-2,640.93

Finding the Fourth Proportional to 3,898.18, 5,381.06 and 2,640.93

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Solution

The fourth proportional to 3,898.18, 5,381.06 and 2,640.93 is: 3,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.18 : 5,381.06 = 2,640.93 : x
  2. Step 2: Convert to fraction form
    3,898.18/5,381.06 = 2,640.93/x
  3. Step 3: Cross multiply
    3,898.18x = 5,381.06 × 2,640.93
  4. Step 4: Simplify right side
    3,898.18x = 14,211,002.79
  5. Step 5: Solve for x
    x = 14,211,002.79/3,898.18
  6. Step 6: Final answer
    x = 3,645.55

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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.