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Finding the Fourth Proportional to 8,670.80, 13,009.80 and 5,554.32

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Solution

The fourth proportional to 8,670.80, 13,009.80 and 5,554.32 is: 8,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.80 : 13,009.80 = 5,554.32 : x
  2. Step 2: Convert to fraction form
    8,670.80/13,009.80 = 5,554.32/x
  3. Step 3: Cross multiply
    8,670.80x = 13,009.80 × 5,554.32
  4. Step 4: Simplify right side
    8,670.80x = 72,260,592.34
  5. Step 5: Solve for x
    x = 72,260,592.34/8,670.80
  6. Step 6: Final answer
    x = 8,333.79

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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.