Home / 1,555.62-2,147.11-1,059.45

Finding the Fourth Proportional to 1,555.62, 2,147.11 and 1,059.45

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Solution

The fourth proportional to 1,555.62, 2,147.11 and 1,059.45 is: 1,462.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.62 : 2,147.11 = 1,059.45 : x
  2. Step 2: Convert to fraction form
    1,555.62/2,147.11 = 1,059.45/x
  3. Step 3: Cross multiply
    1,555.62x = 2,147.11 × 1,059.45
  4. Step 4: Simplify right side
    1,555.62x = 2,274,753.04
  5. Step 5: Solve for x
    x = 2,274,753.04/1,555.62
  6. Step 6: Final answer
    x = 1,462.28

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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.