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Finding the Fourth Proportional to 8,374.95, 12,563.55 and 4,428.12

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Solution

The fourth proportional to 8,374.95, 12,563.55 and 4,428.12 is: 6,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.95 : 12,563.55 = 4,428.12 : x
  2. Step 2: Convert to fraction form
    8,374.95/12,563.55 = 4,428.12/x
  3. Step 3: Cross multiply
    8,374.95x = 12,563.55 × 4,428.12
  4. Step 4: Simplify right side
    8,374.95x = 55,632,907.03
  5. Step 5: Solve for x
    x = 55,632,907.03/8,374.95
  6. Step 6: Final answer
    x = 6,642.77

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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.