Home / 1,754.40-2,420.72-1,091.36

Finding the Fourth Proportional to 1,754.40, 2,420.72 and 1,091.36

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Solution

The fourth proportional to 1,754.40, 2,420.72 and 1,091.36 is: 1,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.40 : 2,420.72 = 1,091.36 : x
  2. Step 2: Convert to fraction form
    1,754.40/2,420.72 = 1,091.36/x
  3. Step 3: Cross multiply
    1,754.40x = 2,420.72 × 1,091.36
  4. Step 4: Simplify right side
    1,754.40x = 2,641,876.98
  5. Step 5: Solve for x
    x = 2,641,876.98/1,754.40
  6. Step 6: Final answer
    x = 1,505.86

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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.