Home / 5,101.68-7,043.58-3,980.64

Finding the Fourth Proportional to 5,101.68, 7,043.58 and 3,980.64

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Solution

The fourth proportional to 5,101.68, 7,043.58 and 3,980.64 is: 5,495.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,101.68 : 7,043.58 = 3,980.64 : x
  2. Step 2: Convert to fraction form
    5,101.68/7,043.58 = 3,980.64/x
  3. Step 3: Cross multiply
    5,101.68x = 7,043.58 × 3,980.64
  4. Step 4: Simplify right side
    5,101.68x = 28,037,956.29
  5. Step 5: Solve for x
    x = 28,037,956.29/5,101.68
  6. Step 6: Final answer
    x = 5,495.83

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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.