Home / 5,170.23-7,128.81-3,751.11

Finding the Fourth Proportional to 5,170.23, 7,128.81 and 3,751.11

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Solution

The fourth proportional to 5,170.23, 7,128.81 and 3,751.11 is: 5,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.23 : 7,128.81 = 3,751.11 : x
  2. Step 2: Convert to fraction form
    5,170.23/7,128.81 = 3,751.11/x
  3. Step 3: Cross multiply
    5,170.23x = 7,128.81 × 3,751.11
  4. Step 4: Simplify right side
    5,170.23x = 26,740,950.48
  5. Step 5: Solve for x
    x = 26,740,950.48/5,170.23
  6. Step 6: Final answer
    x = 5,172.10

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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.