Home / 1,410.92-1,942.84-1,115.28

Finding the Fourth Proportional to 1,410.92, 1,942.84 and 1,115.28

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Solution

The fourth proportional to 1,410.92, 1,942.84 and 1,115.28 is: 1,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.92 : 1,942.84 = 1,115.28 : x
  2. Step 2: Convert to fraction form
    1,410.92/1,942.84 = 1,115.28/x
  3. Step 3: Cross multiply
    1,410.92x = 1,942.84 × 1,115.28
  4. Step 4: Simplify right side
    1,410.92x = 2,166,810.60
  5. Step 5: Solve for x
    x = 2,166,810.60/1,410.92
  6. Step 6: Final answer
    x = 1,535.74

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1.5x scale

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.