Home / 2,421.02-3,628.74-1,119.76

Finding the Fourth Proportional to 2,421.02, 3,628.74 and 1,119.76

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Solution

The fourth proportional to 2,421.02, 3,628.74 and 1,119.76 is: 1,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.02 : 3,628.74 = 1,119.76 : x
  2. Step 2: Convert to fraction form
    2,421.02/3,628.74 = 1,119.76/x
  3. Step 3: Cross multiply
    2,421.02x = 3,628.74 × 1,119.76
  4. Step 4: Simplify right side
    2,421.02x = 4,063,317.90
  5. Step 5: Solve for x
    x = 4,063,317.90/2,421.02
  6. Step 6: Final answer
    x = 1,678.35

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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.