Home / 7,031.92-9,703.76-3,888.08

Finding the Fourth Proportional to 7,031.92, 9,703.76 and 3,888.08

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Solution

The fourth proportional to 7,031.92, 9,703.76 and 3,888.08 is: 5,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.92 : 9,703.76 = 3,888.08 : x
  2. Step 2: Convert to fraction form
    7,031.92/9,703.76 = 3,888.08/x
  3. Step 3: Cross multiply
    7,031.92x = 9,703.76 × 3,888.08
  4. Step 4: Simplify right side
    7,031.92x = 37,728,995.18
  5. Step 5: Solve for x
    x = 37,728,995.18/7,031.92
  6. Step 6: Final answer
    x = 5,365.39

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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.