Home / 4,771.30-7,154.64-2,139.58

Finding the Fourth Proportional to 4,771.30, 7,154.64 and 2,139.58

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Solution

The fourth proportional to 4,771.30, 7,154.64 and 2,139.58 is: 3,208.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,771.30 : 7,154.64 = 2,139.58 : x
  2. Step 2: Convert to fraction form
    4,771.30/7,154.64 = 2,139.58/x
  3. Step 3: Cross multiply
    4,771.30x = 7,154.64 × 2,139.58
  4. Step 4: Simplify right side
    4,771.30x = 15,307,924.65
  5. Step 5: Solve for x
    x = 15,307,924.65/4,771.30
  6. Step 6: Final answer
    x = 3,208.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.