Home / 3,807.27-5,254.20-2,128.68

Finding the Fourth Proportional to 3,807.27, 5,254.20 and 2,128.68

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Solution

The fourth proportional to 3,807.27, 5,254.20 and 2,128.68 is: 2,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.27 : 5,254.20 = 2,128.68 : x
  2. Step 2: Convert to fraction form
    3,807.27/5,254.20 = 2,128.68/x
  3. Step 3: Cross multiply
    3,807.27x = 5,254.20 × 2,128.68
  4. Step 4: Simplify right side
    3,807.27x = 11,184,510.46
  5. Step 5: Solve for x
    x = 11,184,510.46/3,807.27
  6. Step 6: Final answer
    x = 2,937.67

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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.