Home / 2,159.56-3,242.30-1,120.28

Finding the Fourth Proportional to 2,159.56, 3,242.30 and 1,120.28

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Solution

The fourth proportional to 2,159.56, 3,242.30 and 1,120.28 is: 1,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.56 : 3,242.30 = 1,120.28 : x
  2. Step 2: Convert to fraction form
    2,159.56/3,242.30 = 1,120.28/x
  3. Step 3: Cross multiply
    2,159.56x = 3,242.30 × 1,120.28
  4. Step 4: Simplify right side
    2,159.56x = 3,632,283.84
  5. Step 5: Solve for x
    x = 3,632,283.84/2,159.56
  6. Step 6: Final answer
    x = 1,681.96

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1.5x scale

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.