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Finding the Fourth Proportional to 7,700.76, 11,575.22 and 5,085.07

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Solution

The fourth proportional to 7,700.76, 11,575.22 and 5,085.07 is: 7,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.76 : 11,575.22 = 5,085.07 : x
  2. Step 2: Convert to fraction form
    7,700.76/11,575.22 = 5,085.07/x
  3. Step 3: Cross multiply
    7,700.76x = 11,575.22 × 5,085.07
  4. Step 4: Simplify right side
    7,700.76x = 58,860,749.60
  5. Step 5: Solve for x
    x = 58,860,749.60/7,700.76
  6. Step 6: Final answer
    x = 7,643.50

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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.