Home / 3,931.28-5,427.40-2,606.77

Finding the Fourth Proportional to 3,931.28, 5,427.40 and 2,606.77

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Solution

The fourth proportional to 3,931.28, 5,427.40 and 2,606.77 is: 3,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.28 : 5,427.40 = 2,606.77 : x
  2. Step 2: Convert to fraction form
    3,931.28/5,427.40 = 2,606.77/x
  3. Step 3: Cross multiply
    3,931.28x = 5,427.40 × 2,606.77
  4. Step 4: Simplify right side
    3,931.28x = 14,148,003.58
  5. Step 5: Solve for x
    x = 14,148,003.58/3,931.28
  6. Step 6: Final answer
    x = 3,598.83

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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.