Home / 1,281.30-1,771.14-1,179.24

Finding the Fourth Proportional to 1,281.30, 1,771.14 and 1,179.24

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Solution

The fourth proportional to 1,281.30, 1,771.14 and 1,179.24 is: 1,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.30 : 1,771.14 = 1,179.24 : x
  2. Step 2: Convert to fraction form
    1,281.30/1,771.14 = 1,179.24/x
  3. Step 3: Cross multiply
    1,281.30x = 1,771.14 × 1,179.24
  4. Step 4: Simplify right side
    1,281.30x = 2,088,599.13
  5. Step 5: Solve for x
    x = 2,088,599.13/1,281.30
  6. Step 6: Final answer
    x = 1,630.06

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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.