Home / 1,931.11-2,663.99-1,144.60

Finding the Fourth Proportional to 1,931.11, 2,663.99 and 1,144.60

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Solution

The fourth proportional to 1,931.11, 2,663.99 and 1,144.60 is: 1,578.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.11 : 2,663.99 = 1,144.60 : x
  2. Step 2: Convert to fraction form
    1,931.11/2,663.99 = 1,144.60/x
  3. Step 3: Cross multiply
    1,931.11x = 2,663.99 × 1,144.60
  4. Step 4: Simplify right side
    1,931.11x = 3,049,194.86
  5. Step 5: Solve for x
    x = 3,049,194.86/1,931.11
  6. Step 6: Final answer
    x = 1,578.99

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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.