Home / 5,140.37-7,700.11-4,102.13

Finding the Fourth Proportional to 5,140.37, 7,700.11 and 4,102.13

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Solution

The fourth proportional to 5,140.37, 7,700.11 and 4,102.13 is: 6,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.37 : 7,700.11 = 4,102.13 : x
  2. Step 2: Convert to fraction form
    5,140.37/7,700.11 = 4,102.13/x
  3. Step 3: Cross multiply
    5,140.37x = 7,700.11 × 4,102.13
  4. Step 4: Simplify right side
    5,140.37x = 31,586,852.23
  5. Step 5: Solve for x
    x = 31,586,852.23/5,140.37
  6. Step 6: Final answer
    x = 6,144.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.