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Finding the Fourth Proportional to 8,777.55, 12,113.25 and 5,374.50

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Solution

The fourth proportional to 8,777.55, 12,113.25 and 5,374.50 is: 7,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.55 : 12,113.25 = 5,374.50 : x
  2. Step 2: Convert to fraction form
    8,777.55/12,113.25 = 5,374.50/x
  3. Step 3: Cross multiply
    8,777.55x = 12,113.25 × 5,374.50
  4. Step 4: Simplify right side
    8,777.55x = 65,102,662.13
  5. Step 5: Solve for x
    x = 65,102,662.13/8,777.55
  6. Step 6: Final answer
    x = 7,416.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.