Home / 3,127.40-4,315.17-1,800.75

Finding the Fourth Proportional to 3,127.40, 4,315.17 and 1,800.75

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Solution

The fourth proportional to 3,127.40, 4,315.17 and 1,800.75 is: 2,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.40 : 4,315.17 = 1,800.75 : x
  2. Step 2: Convert to fraction form
    3,127.40/4,315.17 = 1,800.75/x
  3. Step 3: Cross multiply
    3,127.40x = 4,315.17 × 1,800.75
  4. Step 4: Simplify right side
    3,127.40x = 7,770,542.38
  5. Step 5: Solve for x
    x = 7,770,542.38/3,127.40
  6. Step 6: Final answer
    x = 2,484.67

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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.