Home / 7,031.36-9,702.83-3,887.55

Finding the Fourth Proportional to 7,031.36, 9,702.83 and 3,887.55

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Solution

The fourth proportional to 7,031.36, 9,702.83 and 3,887.55 is: 5,364.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.36 : 9,702.83 = 3,887.55 : x
  2. Step 2: Convert to fraction form
    7,031.36/9,702.83 = 3,887.55/x
  3. Step 3: Cross multiply
    7,031.36x = 9,702.83 × 3,887.55
  4. Step 4: Simplify right side
    7,031.36x = 37,720,188.25
  5. Step 5: Solve for x
    x = 37,720,188.25/7,031.36
  6. Step 6: Final answer
    x = 5,364.57

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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.