Home / 5,172.80-7,138.16-2,903.93

Finding the Fourth Proportional to 5,172.80, 7,138.16 and 2,903.93

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Solution

The fourth proportional to 5,172.80, 7,138.16 and 2,903.93 is: 4,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.80 : 7,138.16 = 2,903.93 : x
  2. Step 2: Convert to fraction form
    5,172.80/7,138.16 = 2,903.93/x
  3. Step 3: Cross multiply
    5,172.80x = 7,138.16 × 2,903.93
  4. Step 4: Simplify right side
    5,172.80x = 20,728,666.76
  5. Step 5: Solve for x
    x = 20,728,666.76/5,172.80
  6. Step 6: Final answer
    x = 4,007.25

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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.