Home / 7,218.51-9,961.56-4,031.76

Finding the Fourth Proportional to 7,218.51, 9,961.56 and 4,031.76

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Solution

The fourth proportional to 7,218.51, 9,961.56 and 4,031.76 is: 5,563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.51 : 9,961.56 = 4,031.76 : x
  2. Step 2: Convert to fraction form
    7,218.51/9,961.56 = 4,031.76/x
  3. Step 3: Cross multiply
    7,218.51x = 9,961.56 × 4,031.76
  4. Step 4: Simplify right side
    7,218.51x = 40,162,619.15
  5. Step 5: Solve for x
    x = 40,162,619.15/7,218.51
  6. Step 6: Final answer
    x = 5,563.84

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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.