Home / 1,582.12-2,183.48-918.92

Finding the Fourth Proportional to 1,582.12, 2,183.48 and 918.92

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Solution

The fourth proportional to 1,582.12, 2,183.48 and 918.92 is: 1,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.12 : 2,183.48 = 918.92 : x
  2. Step 2: Convert to fraction form
    1,582.12/2,183.48 = 918.92/x
  3. Step 3: Cross multiply
    1,582.12x = 2,183.48 × 918.92
  4. Step 4: Simplify right side
    1,582.12x = 2,006,443.44
  5. Step 5: Solve for x
    x = 2,006,443.44/1,582.12
  6. Step 6: Final answer
    x = 1,268.20

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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.