Home / 7,031.38-9,703.50-3,887.77

Finding the Fourth Proportional to 7,031.38, 9,703.50 and 3,887.77

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Solution

The fourth proportional to 7,031.38, 9,703.50 and 3,887.77 is: 5,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.38 : 9,703.50 = 3,887.77 : x
  2. Step 2: Convert to fraction form
    7,031.38/9,703.50 = 3,887.77/x
  3. Step 3: Cross multiply
    7,031.38x = 9,703.50 × 3,887.77
  4. Step 4: Simplify right side
    7,031.38x = 37,724,976.20
  5. Step 5: Solve for x
    x = 37,724,976.20/7,031.38
  6. Step 6: Final answer
    x = 5,365.23

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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.