Home / 5,391.35-7,440.01-3,123.01

Finding the Fourth Proportional to 5,391.35, 7,440.01 and 3,123.01

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Solution

The fourth proportional to 5,391.35, 7,440.01 and 3,123.01 is: 4,309.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.35 : 7,440.01 = 3,123.01 : x
  2. Step 2: Convert to fraction form
    5,391.35/7,440.01 = 3,123.01/x
  3. Step 3: Cross multiply
    5,391.35x = 7,440.01 × 3,123.01
  4. Step 4: Simplify right side
    5,391.35x = 23,235,207.23
  5. Step 5: Solve for x
    x = 23,235,207.23/5,391.35
  6. Step 6: Final answer
    x = 4,309.72

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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.