Home / 4,878.52-7,318.86-1,415.56

Finding the Fourth Proportional to 4,878.52, 7,318.86 and 1,415.56

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Solution

The fourth proportional to 4,878.52, 7,318.86 and 1,415.56 is: 2,123.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.52 : 7,318.86 = 1,415.56 : x
  2. Step 2: Convert to fraction form
    4,878.52/7,318.86 = 1,415.56/x
  3. Step 3: Cross multiply
    4,878.52x = 7,318.86 × 1,415.56
  4. Step 4: Simplify right side
    4,878.52x = 10,360,285.46
  5. Step 5: Solve for x
    x = 10,360,285.46/4,878.52
  6. Step 6: Final answer
    x = 2,123.65

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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.