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Finding the Fourth Proportional to 7,776.61, 11,667.65 and 6,555.53

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Solution

The fourth proportional to 7,776.61, 11,667.65 and 6,555.53 is: 9,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.61 : 11,667.65 = 6,555.53 : x
  2. Step 2: Convert to fraction form
    7,776.61/11,667.65 = 6,555.53/x
  3. Step 3: Cross multiply
    7,776.61x = 11,667.65 × 6,555.53
  4. Step 4: Simplify right side
    7,776.61x = 76,487,626.00
  5. Step 5: Solve for x
    x = 76,487,626.00/7,776.61
  6. Step 6: Final answer
    x = 9,835.60

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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.