Home / 1,945.46-2,918.21-558.86

Finding the Fourth Proportional to 1,945.46, 2,918.21 and 558.86

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Solution

The fourth proportional to 1,945.46, 2,918.21 and 558.86 is: 838.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.46 : 2,918.21 = 558.86 : x
  2. Step 2: Convert to fraction form
    1,945.46/2,918.21 = 558.86/x
  3. Step 3: Cross multiply
    1,945.46x = 2,918.21 × 558.86
  4. Step 4: Simplify right side
    1,945.46x = 1,630,853.46
  5. Step 5: Solve for x
    x = 1,630,853.46/1,945.46
  6. Step 6: Final answer
    x = 838.29

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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.