Home / 1,947.57-2,688.23-1,358.30

Finding the Fourth Proportional to 1,947.57, 2,688.23 and 1,358.30

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Solution

The fourth proportional to 1,947.57, 2,688.23 and 1,358.30 is: 1,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.57 : 2,688.23 = 1,358.30 : x
  2. Step 2: Convert to fraction form
    1,947.57/2,688.23 = 1,358.30/x
  3. Step 3: Cross multiply
    1,947.57x = 2,688.23 × 1,358.30
  4. Step 4: Simplify right side
    1,947.57x = 3,651,415.20
  5. Step 5: Solve for x
    x = 3,651,415.20/1,947.57
  6. Step 6: Final answer
    x = 1,874.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.