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Finding the Fourth Proportional to 8,370.72, 12,533.76 and 6,916.32

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Solution

The fourth proportional to 8,370.72, 12,533.76 and 6,916.32 is: 10,356.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.72 : 12,533.76 = 6,916.32 : x
  2. Step 2: Convert to fraction form
    8,370.72/12,533.76 = 6,916.32/x
  3. Step 3: Cross multiply
    8,370.72x = 12,533.76 × 6,916.32
  4. Step 4: Simplify right side
    8,370.72x = 86,687,494.96
  5. Step 5: Solve for x
    x = 86,687,494.96/8,370.72
  6. Step 6: Final answer
    x = 10,356.04

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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.