Home / 7,180.12-10,762.50-5,121.88

Finding the Fourth Proportional to 7,180.12, 10,762.50 and 5,121.88

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Solution

The fourth proportional to 7,180.12, 10,762.50 and 5,121.88 is: 7,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.12 : 10,762.50 = 5,121.88 : x
  2. Step 2: Convert to fraction form
    7,180.12/10,762.50 = 5,121.88/x
  3. Step 3: Cross multiply
    7,180.12x = 10,762.50 × 5,121.88
  4. Step 4: Simplify right side
    7,180.12x = 55,124,233.50
  5. Step 5: Solve for x
    x = 55,124,233.50/7,180.12
  6. Step 6: Final answer
    x = 7,677.34

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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.