Home / 7,421.98-11,115.30-4,295.40

Finding the Fourth Proportional to 7,421.98, 11,115.30 and 4,295.40

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Solution

The fourth proportional to 7,421.98, 11,115.30 and 4,295.40 is: 6,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.98 : 11,115.30 = 4,295.40 : x
  2. Step 2: Convert to fraction form
    7,421.98/11,115.30 = 4,295.40/x
  3. Step 3: Cross multiply
    7,421.98x = 11,115.30 × 4,295.40
  4. Step 4: Simplify right side
    7,421.98x = 47,744,659.62
  5. Step 5: Solve for x
    x = 47,744,659.62/7,421.98
  6. Step 6: Final answer
    x = 6,432.87

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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.