Home / 1,627.08-2,245.41-918.87

Finding the Fourth Proportional to 1,627.08, 2,245.41 and 918.87

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Solution

The fourth proportional to 1,627.08, 2,245.41 and 918.87 is: 1,268.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.08 : 2,245.41 = 918.87 : x
  2. Step 2: Convert to fraction form
    1,627.08/2,245.41 = 918.87/x
  3. Step 3: Cross multiply
    1,627.08x = 2,245.41 × 918.87
  4. Step 4: Simplify right side
    1,627.08x = 2,063,239.89
  5. Step 5: Solve for x
    x = 2,063,239.89/1,627.08
  6. Step 6: Final answer
    x = 1,268.06

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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.