Home / 7,031.92-9,704.46-3,888.40

Finding the Fourth Proportional to 7,031.92, 9,704.46 and 3,888.40

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Solution

The fourth proportional to 7,031.92, 9,704.46 and 3,888.40 is: 5,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.92 : 9,704.46 = 3,888.40 : x
  2. Step 2: Convert to fraction form
    7,031.92/9,704.46 = 3,888.40/x
  3. Step 3: Cross multiply
    7,031.92x = 9,704.46 × 3,888.40
  4. Step 4: Simplify right side
    7,031.92x = 37,734,822.26
  5. Step 5: Solve for x
    x = 37,734,822.26/7,031.92
  6. Step 6: Final answer
    x = 5,366.22

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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.