Home / 1,558.80-2,141.55-1,263.18

Finding the Fourth Proportional to 1,558.80, 2,141.55 and 1,263.18

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Solution

The fourth proportional to 1,558.80, 2,141.55 and 1,263.18 is: 1,735.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.80 : 2,141.55 = 1,263.18 : x
  2. Step 2: Convert to fraction form
    1,558.80/2,141.55 = 1,263.18/x
  3. Step 3: Cross multiply
    1,558.80x = 2,141.55 × 1,263.18
  4. Step 4: Simplify right side
    1,558.80x = 2,705,163.13
  5. Step 5: Solve for x
    x = 2,705,163.13/1,558.80
  6. Step 6: Final answer
    x = 1,735.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.