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Finding the Fourth Proportional to 2,358.91, 3,538.37 and 715.47

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Solution

The fourth proportional to 2,358.91, 3,538.37 and 715.47 is: 1,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.91 : 3,538.37 = 715.47 : x
  2. Step 2: Convert to fraction form
    2,358.91/3,538.37 = 715.47/x
  3. Step 3: Cross multiply
    2,358.91x = 3,538.37 × 715.47
  4. Step 4: Simplify right side
    2,358.91x = 2,531,597.58
  5. Step 5: Solve for x
    x = 2,531,597.58/2,358.91
  6. Step 6: Final answer
    x = 1,073.21

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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.