Home / 10,276.89-15,415.34-2,485.70

Finding the Fourth Proportional to 10,276.89, 15,415.34 and 2,485.70

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Solution

The fourth proportional to 10,276.89, 15,415.34 and 2,485.70 is: 3,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,276.89 : 15,415.34 = 2,485.70 : x
  2. Step 2: Convert to fraction form
    10,276.89/15,415.34 = 2,485.70/x
  3. Step 3: Cross multiply
    10,276.89x = 15,415.34 × 2,485.70
  4. Step 4: Simplify right side
    10,276.89x = 38,317,910.64
  5. Step 5: Solve for x
    x = 38,317,910.64/10,276.89
  6. Step 6: Final answer
    x = 3,728.55

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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.