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Finding the Fourth Proportional to 6,656.90, 9,992.55 and 3,740.90

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Solution

The fourth proportional to 6,656.90, 9,992.55 and 3,740.90 is: 5,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656.90 : 9,992.55 = 3,740.90 : x
  2. Step 2: Convert to fraction form
    6,656.90/9,992.55 = 3,740.90/x
  3. Step 3: Cross multiply
    6,656.90x = 9,992.55 × 3,740.90
  4. Step 4: Simplify right side
    6,656.90x = 37,381,130.30
  5. Step 5: Solve for x
    x = 37,381,130.30/6,656.90
  6. Step 6: Final answer
    x = 5,615.40

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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.