Home / 1,445.85-2,165.54-1,120.23

Finding the Fourth Proportional to 1,445.85, 2,165.54 and 1,120.23

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Solution

The fourth proportional to 1,445.85, 2,165.54 and 1,120.23 is: 1,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.85 : 2,165.54 = 1,120.23 : x
  2. Step 2: Convert to fraction form
    1,445.85/2,165.54 = 1,120.23/x
  3. Step 3: Cross multiply
    1,445.85x = 2,165.54 × 1,120.23
  4. Step 4: Simplify right side
    1,445.85x = 2,425,897.27
  5. Step 5: Solve for x
    x = 2,425,897.27/1,445.85
  6. Step 6: Final answer
    x = 1,677.83

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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.