Home / 2,431.43-3,353.58-1,590.78

Finding the Fourth Proportional to 2,431.43, 3,353.58 and 1,590.78

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Solution

The fourth proportional to 2,431.43, 3,353.58 and 1,590.78 is: 2,194.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.43 : 3,353.58 = 1,590.78 : x
  2. Step 2: Convert to fraction form
    2,431.43/3,353.58 = 1,590.78/x
  3. Step 3: Cross multiply
    2,431.43x = 3,353.58 × 1,590.78
  4. Step 4: Simplify right side
    2,431.43x = 5,334,807.99
  5. Step 5: Solve for x
    x = 5,334,807.99/2,431.43
  6. Step 6: Final answer
    x = 2,194.11

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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.