Home / 2,815.60-4,207.12-2,031.88

Finding the Fourth Proportional to 2,815.60, 4,207.12 and 2,031.88

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Solution

The fourth proportional to 2,815.60, 4,207.12 and 2,031.88 is: 3,036.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.60 : 4,207.12 = 2,031.88 : x
  2. Step 2: Convert to fraction form
    2,815.60/4,207.12 = 2,031.88/x
  3. Step 3: Cross multiply
    2,815.60x = 4,207.12 × 2,031.88
  4. Step 4: Simplify right side
    2,815.60x = 8,548,362.99
  5. Step 5: Solve for x
    x = 8,548,362.99/2,815.60
  6. Step 6: Final answer
    x = 3,036.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.