Home / 1,809.11-2,495.58-1,310.88

Finding the Fourth Proportional to 1,809.11, 2,495.58 and 1,310.88

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Solution

The fourth proportional to 1,809.11, 2,495.58 and 1,310.88 is: 1,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.11 : 2,495.58 = 1,310.88 : x
  2. Step 2: Convert to fraction form
    1,809.11/2,495.58 = 1,310.88/x
  3. Step 3: Cross multiply
    1,809.11x = 2,495.58 × 1,310.88
  4. Step 4: Simplify right side
    1,809.11x = 3,271,405.91
  5. Step 5: Solve for x
    x = 3,271,405.91/1,809.11
  6. Step 6: Final answer
    x = 1,808.30

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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.