Home / 1,945.12-2,685.85-1,586.28

Finding the Fourth Proportional to 1,945.12, 2,685.85 and 1,586.28

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Solution

The fourth proportional to 1,945.12, 2,685.85 and 1,586.28 is: 2,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.12 : 2,685.85 = 1,586.28 : x
  2. Step 2: Convert to fraction form
    1,945.12/2,685.85 = 1,586.28/x
  3. Step 3: Cross multiply
    1,945.12x = 2,685.85 × 1,586.28
  4. Step 4: Simplify right side
    1,945.12x = 4,260,510.14
  5. Step 5: Solve for x
    x = 4,260,510.14/1,945.12
  6. Step 6: Final answer
    x = 2,190.36

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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.