Home / 3,123.85-4,302.13-3,055.81

Finding the Fourth Proportional to 3,123.85, 4,302.13 and 3,055.81

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Solution

The fourth proportional to 3,123.85, 4,302.13 and 3,055.81 is: 4,208.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.85 : 4,302.13 = 3,055.81 : x
  2. Step 2: Convert to fraction form
    3,123.85/4,302.13 = 3,055.81/x
  3. Step 3: Cross multiply
    3,123.85x = 4,302.13 × 3,055.81
  4. Step 4: Simplify right side
    3,123.85x = 13,146,491.88
  5. Step 5: Solve for x
    x = 13,146,491.88/3,123.85
  6. Step 6: Final answer
    x = 4,208.43

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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.