Home / 3,981.16-5,971.69-2,421.59

Finding the Fourth Proportional to 3,981.16, 5,971.69 and 2,421.59

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Solution

The fourth proportional to 3,981.16, 5,971.69 and 2,421.59 is: 3,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.16 : 5,971.69 = 2,421.59 : x
  2. Step 2: Convert to fraction form
    3,981.16/5,971.69 = 2,421.59/x
  3. Step 3: Cross multiply
    3,981.16x = 5,971.69 × 2,421.59
  4. Step 4: Simplify right side
    3,981.16x = 14,460,984.79
  5. Step 5: Solve for x
    x = 14,460,984.79/3,981.16
  6. Step 6: Final answer
    x = 3,632.35

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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.