Home / 10,278.82-15,415.80-4,728.70

Finding the Fourth Proportional to 10,278.82, 15,415.80 and 4,728.70

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Solution

The fourth proportional to 10,278.82, 15,415.80 and 4,728.70 is: 7,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.82 : 15,415.80 = 4,728.70 : x
  2. Step 2: Convert to fraction form
    10,278.82/15,415.80 = 4,728.70/x
  3. Step 3: Cross multiply
    10,278.82x = 15,415.80 × 4,728.70
  4. Step 4: Simplify right side
    10,278.82x = 72,896,693.46
  5. Step 5: Solve for x
    x = 72,896,693.46/10,278.82
  6. Step 6: Final answer
    x = 7,091.93

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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.