Home / 2,157.04-2,976.68-1,225.48

Finding the Fourth Proportional to 2,157.04, 2,976.68 and 1,225.48

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Solution

The fourth proportional to 2,157.04, 2,976.68 and 1,225.48 is: 1,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.04 : 2,976.68 = 1,225.48 : x
  2. Step 2: Convert to fraction form
    2,157.04/2,976.68 = 1,225.48/x
  3. Step 3: Cross multiply
    2,157.04x = 2,976.68 × 1,225.48
  4. Step 4: Simplify right side
    2,157.04x = 3,647,861.81
  5. Step 5: Solve for x
    x = 3,647,861.81/2,157.04
  6. Step 6: Final answer
    x = 1,691.14

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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.