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Finding the Fourth Proportional to 2,421.64, 3,632.88 and 960.76

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Solution

The fourth proportional to 2,421.64, 3,632.88 and 960.76 is: 1,441.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.64 : 3,632.88 = 960.76 : x
  2. Step 2: Convert to fraction form
    2,421.64/3,632.88 = 960.76/x
  3. Step 3: Cross multiply
    2,421.64x = 3,632.88 × 960.76
  4. Step 4: Simplify right side
    2,421.64x = 3,490,325.79
  5. Step 5: Solve for x
    x = 3,490,325.79/2,421.64
  6. Step 6: Final answer
    x = 1,441.31

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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.