Home / 3,928.79-5,423.16-2,602.91

Finding the Fourth Proportional to 3,928.79, 5,423.16 and 2,602.91

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Solution

The fourth proportional to 3,928.79, 5,423.16 and 2,602.91 is: 3,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.79 : 5,423.16 = 2,602.91 : x
  2. Step 2: Convert to fraction form
    3,928.79/5,423.16 = 2,602.91/x
  3. Step 3: Cross multiply
    3,928.79x = 5,423.16 × 2,602.91
  4. Step 4: Simplify right side
    3,928.79x = 14,115,970.28
  5. Step 5: Solve for x
    x = 14,115,970.28/3,928.79
  6. Step 6: Final answer
    x = 3,592.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.