Home / 1,582.87-2,181.27-1,139.94

Finding the Fourth Proportional to 1,582.87, 2,181.27 and 1,139.94

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Solution

The fourth proportional to 1,582.87, 2,181.27 and 1,139.94 is: 1,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.87 : 2,181.27 = 1,139.94 : x
  2. Step 2: Convert to fraction form
    1,582.87/2,181.27 = 1,139.94/x
  3. Step 3: Cross multiply
    1,582.87x = 2,181.27 × 1,139.94
  4. Step 4: Simplify right side
    1,582.87x = 2,486,506.02
  5. Step 5: Solve for x
    x = 2,486,506.02/1,582.87
  6. Step 6: Final answer
    x = 1,570.88

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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.