Home / 1,787.08-2,677.80-1,511.86

Finding the Fourth Proportional to 1,787.08, 2,677.80 and 1,511.86

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Solution

The fourth proportional to 1,787.08, 2,677.80 and 1,511.86 is: 2,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.08 : 2,677.80 = 1,511.86 : x
  2. Step 2: Convert to fraction form
    1,787.08/2,677.80 = 1,511.86/x
  3. Step 3: Cross multiply
    1,787.08x = 2,677.80 × 1,511.86
  4. Step 4: Simplify right side
    1,787.08x = 4,048,458.71
  5. Step 5: Solve for x
    x = 4,048,458.71/1,787.08
  6. Step 6: Final answer
    x = 2,265.40

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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.