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Finding the Fourth Proportional to 2,358.71, 3,537.71 and 857.58

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Solution

The fourth proportional to 2,358.71, 3,537.71 and 857.58 is: 1,286.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.71 : 3,537.71 = 857.58 : x
  2. Step 2: Convert to fraction form
    2,358.71/3,537.71 = 857.58/x
  3. Step 3: Cross multiply
    2,358.71x = 3,537.71 × 857.58
  4. Step 4: Simplify right side
    2,358.71x = 3,033,869.34
  5. Step 5: Solve for x
    x = 3,033,869.34/2,358.71
  6. Step 6: Final answer
    x = 1,286.24

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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.