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Finding the Fourth Proportional to 1,674.87, 2,314.19 and 1,615.74

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Solution

The fourth proportional to 1,674.87, 2,314.19 and 1,615.74 is: 2,232.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.87 : 2,314.19 = 1,615.74 : x
  2. Step 2: Convert to fraction form
    1,674.87/2,314.19 = 1,615.74/x
  3. Step 3: Cross multiply
    1,674.87x = 2,314.19 × 1,615.74
  4. Step 4: Simplify right side
    1,674.87x = 3,739,115.62
  5. Step 5: Solve for x
    x = 3,739,115.62/1,674.87
  6. Step 6: Final answer
    x = 2,232.49

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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.