Home / 2,787.54-4,178.56-1,555.53

Finding the Fourth Proportional to 2,787.54, 4,178.56 and 1,555.53

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Solution

The fourth proportional to 2,787.54, 4,178.56 and 1,555.53 is: 2,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.54 : 4,178.56 = 1,555.53 : x
  2. Step 2: Convert to fraction form
    2,787.54/4,178.56 = 1,555.53/x
  3. Step 3: Cross multiply
    2,787.54x = 4,178.56 × 1,555.53
  4. Step 4: Simplify right side
    2,787.54x = 6,499,875.44
  5. Step 5: Solve for x
    x = 6,499,875.44/2,787.54
  6. Step 6: Final answer
    x = 2,331.76

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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.