Home / 6,281.13-9,421.39-2,119.76

Finding the Fourth Proportional to 6,281.13, 9,421.39 and 2,119.76

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Solution

The fourth proportional to 6,281.13, 9,421.39 and 2,119.76 is: 3,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,281.13 : 9,421.39 = 2,119.76 : x
  2. Step 2: Convert to fraction form
    6,281.13/9,421.39 = 2,119.76/x
  3. Step 3: Cross multiply
    6,281.13x = 9,421.39 × 2,119.76
  4. Step 4: Simplify right side
    6,281.13x = 19,971,085.67
  5. Step 5: Solve for x
    x = 19,971,085.67/6,281.13
  6. Step 6: Final answer
    x = 3,179.54

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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.