Home / 2,478.78-3,711.60-1,437.84

Finding the Fourth Proportional to 2,478.78, 3,711.60 and 1,437.84

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Solution

The fourth proportional to 2,478.78, 3,711.60 and 1,437.84 is: 2,152.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.78 : 3,711.60 = 1,437.84 : x
  2. Step 2: Convert to fraction form
    2,478.78/3,711.60 = 1,437.84/x
  3. Step 3: Cross multiply
    2,478.78x = 3,711.60 × 1,437.84
  4. Step 4: Simplify right side
    2,478.78x = 5,336,686.94
  5. Step 5: Solve for x
    x = 5,336,686.94/2,478.78
  6. Step 6: Final answer
    x = 2,152.95

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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.