Home / 7,031.39-9,702.94-3,887.38

Finding the Fourth Proportional to 7,031.39, 9,702.94 and 3,887.38

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Solution

The fourth proportional to 7,031.39, 9,702.94 and 3,887.38 is: 5,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.39 : 9,702.94 = 3,887.38 : x
  2. Step 2: Convert to fraction form
    7,031.39/9,702.94 = 3,887.38/x
  3. Step 3: Cross multiply
    7,031.39x = 9,702.94 × 3,887.38
  4. Step 4: Simplify right side
    7,031.39x = 37,719,014.90
  5. Step 5: Solve for x
    x = 37,719,014.90/7,031.39
  6. Step 6: Final answer
    x = 5,364.38

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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.