Home / 7,931.39-11,897.10-2,385.32

Finding the Fourth Proportional to 7,931.39, 11,897.10 and 2,385.32

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Solution

The fourth proportional to 7,931.39, 11,897.10 and 2,385.32 is: 3,577.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.39 : 11,897.10 = 2,385.32 : x
  2. Step 2: Convert to fraction form
    7,931.39/11,897.10 = 2,385.32/x
  3. Step 3: Cross multiply
    7,931.39x = 11,897.10 × 2,385.32
  4. Step 4: Simplify right side
    7,931.39x = 28,378,331.09
  5. Step 5: Solve for x
    x = 28,378,331.09/7,931.39
  6. Step 6: Final answer
    x = 3,577.98

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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.