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Finding the Fourth Proportional to 9,088.80, 13,636.40 and 8,768.80

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Solution

The fourth proportional to 9,088.80, 13,636.40 and 8,768.80 is: 13,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,088.80 : 13,636.40 = 8,768.80 : x
  2. Step 2: Convert to fraction form
    9,088.80/13,636.40 = 8,768.80/x
  3. Step 3: Cross multiply
    9,088.80x = 13,636.40 × 8,768.80
  4. Step 4: Simplify right side
    9,088.80x = 119,574,864.32
  5. Step 5: Solve for x
    x = 119,574,864.32/9,088.80
  6. Step 6: Final answer
    x = 13,156.29

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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.