Home / 7,322.40-10,980.36-2,128.68

Finding the Fourth Proportional to 7,322.40, 10,980.36 and 2,128.68

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Solution

The fourth proportional to 7,322.40, 10,980.36 and 2,128.68 is: 3,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.40 : 10,980.36 = 2,128.68 : x
  2. Step 2: Convert to fraction form
    7,322.40/10,980.36 = 2,128.68/x
  3. Step 3: Cross multiply
    7,322.40x = 10,980.36 × 2,128.68
  4. Step 4: Simplify right side
    7,322.40x = 23,373,672.72
  5. Step 5: Solve for x
    x = 23,373,672.72/7,322.40
  6. Step 6: Final answer
    x = 3,192.08

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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.