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Finding the Fourth Proportional to 1,651.79, 2,279.54 and 943.75

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Solution

The fourth proportional to 1,651.79, 2,279.54 and 943.75 is: 1,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.79 : 2,279.54 = 943.75 : x
  2. Step 2: Convert to fraction form
    1,651.79/2,279.54 = 943.75/x
  3. Step 3: Cross multiply
    1,651.79x = 2,279.54 × 943.75
  4. Step 4: Simplify right side
    1,651.79x = 2,151,315.88
  5. Step 5: Solve for x
    x = 2,151,315.88/1,651.79
  6. Step 6: Final answer
    x = 1,302.41

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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.