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Finding the Fourth Proportional to 7,239.58, 9,992.60 and 4,256.39

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Solution

The fourth proportional to 7,239.58, 9,992.60 and 4,256.39 is: 5,874.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.58 : 9,992.60 = 4,256.39 : x
  2. Step 2: Convert to fraction form
    7,239.58/9,992.60 = 4,256.39/x
  3. Step 3: Cross multiply
    7,239.58x = 9,992.60 × 4,256.39
  4. Step 4: Simplify right side
    7,239.58x = 42,532,402.71
  5. Step 5: Solve for x
    x = 42,532,402.71/7,239.58
  6. Step 6: Final answer
    x = 5,874.98

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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.