Home / 1,579.60-2,369.20-425.44

Finding the Fourth Proportional to 1,579.60, 2,369.20 and 425.44

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Solution

The fourth proportional to 1,579.60, 2,369.20 and 425.44 is: 638.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.60 : 2,369.20 = 425.44 : x
  2. Step 2: Convert to fraction form
    1,579.60/2,369.20 = 425.44/x
  3. Step 3: Cross multiply
    1,579.60x = 2,369.20 × 425.44
  4. Step 4: Simplify right side
    1,579.60x = 1,007,952.45
  5. Step 5: Solve for x
    x = 1,007,952.45/1,579.60
  6. Step 6: Final answer
    x = 638.11

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1.5x scale

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.