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Finding the Fourth Proportional to 2,358.21, 3,538.07 and 714.92

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Solution

The fourth proportional to 2,358.21, 3,538.07 and 714.92 is: 1,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.21 : 3,538.07 = 714.92 : x
  2. Step 2: Convert to fraction form
    2,358.21/3,538.07 = 714.92/x
  3. Step 3: Cross multiply
    2,358.21x = 3,538.07 × 714.92
  4. Step 4: Simplify right side
    2,358.21x = 2,529,415.74
  5. Step 5: Solve for x
    x = 2,529,415.74/2,358.21
  6. Step 6: Final answer
    x = 1,072.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.