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Finding the Fourth Proportional to 10,661.64, 15,992.46 and 2,870.25

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Solution

The fourth proportional to 10,661.64, 15,992.46 and 2,870.25 is: 4,305.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.64 : 15,992.46 = 2,870.25 : x
  2. Step 2: Convert to fraction form
    10,661.64/15,992.46 = 2,870.25/x
  3. Step 3: Cross multiply
    10,661.64x = 15,992.46 × 2,870.25
  4. Step 4: Simplify right side
    10,661.64x = 45,902,358.32
  5. Step 5: Solve for x
    x = 45,902,358.32/10,661.64
  6. Step 6: Final answer
    x = 4,305.38

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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.