Home / 3,953.79-5,928.67-1,320.35

Finding the Fourth Proportional to 3,953.79, 5,928.67 and 1,320.35

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Solution

The fourth proportional to 3,953.79, 5,928.67 and 1,320.35 is: 1,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.79 : 5,928.67 = 1,320.35 : x
  2. Step 2: Convert to fraction form
    3,953.79/5,928.67 = 1,320.35/x
  3. Step 3: Cross multiply
    3,953.79x = 5,928.67 × 1,320.35
  4. Step 4: Simplify right side
    3,953.79x = 7,827,904.61
  5. Step 5: Solve for x
    x = 7,827,904.61/3,953.79
  6. Step 6: Final answer
    x = 1,979.85

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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.