Home / 9,139.13-13,708.76-2,213.63

Finding the Fourth Proportional to 9,139.13, 13,708.76 and 2,213.63

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Solution

The fourth proportional to 9,139.13, 13,708.76 and 2,213.63 is: 3,320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.13 : 13,708.76 = 2,213.63 : x
  2. Step 2: Convert to fraction form
    9,139.13/13,708.76 = 2,213.63/x
  3. Step 3: Cross multiply
    9,139.13x = 13,708.76 × 2,213.63
  4. Step 4: Simplify right side
    9,139.13x = 30,346,059.39
  5. Step 5: Solve for x
    x = 30,346,059.39/9,139.13
  6. Step 6: Final answer
    x = 3,320.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.