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Finding the Fourth Proportional to 7,405.98, 11,108.88 and 1,859.28

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Solution

The fourth proportional to 7,405.98, 11,108.88 and 1,859.28 is: 2,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.98 : 11,108.88 = 1,859.28 : x
  2. Step 2: Convert to fraction form
    7,405.98/11,108.88 = 1,859.28/x
  3. Step 3: Cross multiply
    7,405.98x = 11,108.88 × 1,859.28
  4. Step 4: Simplify right side
    7,405.98x = 20,654,518.41
  5. Step 5: Solve for x
    x = 20,654,518.41/7,405.98
  6. Step 6: Final answer
    x = 2,788.90

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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.