Home / 3,926.16-5,417.98-2,157.76

Finding the Fourth Proportional to 3,926.16, 5,417.98 and 2,157.76

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Solution

The fourth proportional to 3,926.16, 5,417.98 and 2,157.76 is: 2,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.16 : 5,417.98 = 2,157.76 : x
  2. Step 2: Convert to fraction form
    3,926.16/5,417.98 = 2,157.76/x
  3. Step 3: Cross multiply
    3,926.16x = 5,417.98 × 2,157.76
  4. Step 4: Simplify right side
    3,926.16x = 11,690,700.52
  5. Step 5: Solve for x
    x = 11,690,700.52/3,926.16
  6. Step 6: Final answer
    x = 2,977.64

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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.