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Finding the Fourth Proportional to 3,135.42, 4,326.79 and 1,719.13

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Solution

The fourth proportional to 3,135.42, 4,326.79 and 1,719.13 is: 2,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.42 : 4,326.79 = 1,719.13 : x
  2. Step 2: Convert to fraction form
    3,135.42/4,326.79 = 1,719.13/x
  3. Step 3: Cross multiply
    3,135.42x = 4,326.79 × 1,719.13
  4. Step 4: Simplify right side
    3,135.42x = 7,438,314.49
  5. Step 5: Solve for x
    x = 7,438,314.49/3,135.42
  6. Step 6: Final answer
    x = 2,372.35

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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.