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Finding the Fourth Proportional to 10,444.80, 15,656.40 and 5,757.60

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Solution

The fourth proportional to 10,444.80, 15,656.40 and 5,757.60 is: 8,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,444.80 : 15,656.40 = 5,757.60 : x
  2. Step 2: Convert to fraction form
    10,444.80/15,656.40 = 5,757.60/x
  3. Step 3: Cross multiply
    10,444.80x = 15,656.40 × 5,757.60
  4. Step 4: Simplify right side
    10,444.80x = 90,143,288.64
  5. Step 5: Solve for x
    x = 90,143,288.64/10,444.80
  6. Step 6: Final answer
    x = 8,630.45

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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.