Home / 7,421.40-11,148.30-5,234.40

Finding the Fourth Proportional to 7,421.40, 11,148.30 and 5,234.40

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Solution

The fourth proportional to 7,421.40, 11,148.30 and 5,234.40 is: 7,863.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.40 : 11,148.30 = 5,234.40 : x
  2. Step 2: Convert to fraction form
    7,421.40/11,148.30 = 5,234.40/x
  3. Step 3: Cross multiply
    7,421.40x = 11,148.30 × 5,234.40
  4. Step 4: Simplify right side
    7,421.40x = 58,354,661.52
  5. Step 5: Solve for x
    x = 58,354,661.52/7,421.40
  6. Step 6: Final answer
    x = 7,863.03

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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.