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Finding the Fourth Proportional to 8,790.96, 12,125.92 and 6,137.40

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Solution

The fourth proportional to 8,790.96, 12,125.92 and 6,137.40 is: 8,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.96 : 12,125.92 = 6,137.40 : x
  2. Step 2: Convert to fraction form
    8,790.96/12,125.92 = 6,137.40/x
  3. Step 3: Cross multiply
    8,790.96x = 12,125.92 × 6,137.40
  4. Step 4: Simplify right side
    8,790.96x = 74,421,621.41
  5. Step 5: Solve for x
    x = 74,421,621.41/8,790.96
  6. Step 6: Final answer
    x = 8,465.70

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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.