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Finding the Fourth Proportional to 8,356.48, 12,528.96 and 3,970.24

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Solution

The fourth proportional to 8,356.48, 12,528.96 and 3,970.24 is: 5,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.48 : 12,528.96 = 3,970.24 : x
  2. Step 2: Convert to fraction form
    8,356.48/12,528.96 = 3,970.24/x
  3. Step 3: Cross multiply
    8,356.48x = 12,528.96 × 3,970.24
  4. Step 4: Simplify right side
    8,356.48x = 49,742,978.15
  5. Step 5: Solve for x
    x = 49,742,978.15/8,356.48
  6. Step 6: Final answer
    x = 5,952.62

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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.