Home / 7,390.40-11,088.30-3,491.88

Finding the Fourth Proportional to 7,390.40, 11,088.30 and 3,491.88

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Solution

The fourth proportional to 7,390.40, 11,088.30 and 3,491.88 is: 5,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.40 : 11,088.30 = 3,491.88 : x
  2. Step 2: Convert to fraction form
    7,390.40/11,088.30 = 3,491.88/x
  3. Step 3: Cross multiply
    7,390.40x = 11,088.30 × 3,491.88
  4. Step 4: Simplify right side
    7,390.40x = 38,719,013.00
  5. Step 5: Solve for x
    x = 38,719,013.00/7,390.40
  6. Step 6: Final answer
    x = 5,239.10

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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.