Home / 1,899.62-2,621.40-1,113.74

Finding the Fourth Proportional to 1,899.62, 2,621.40 and 1,113.74

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Solution

The fourth proportional to 1,899.62, 2,621.40 and 1,113.74 is: 1,536.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.62 : 2,621.40 = 1,113.74 : x
  2. Step 2: Convert to fraction form
    1,899.62/2,621.40 = 1,113.74/x
  3. Step 3: Cross multiply
    1,899.62x = 2,621.40 × 1,113.74
  4. Step 4: Simplify right side
    1,899.62x = 2,919,558.04
  5. Step 5: Solve for x
    x = 2,919,558.04/1,899.62
  6. Step 6: Final answer
    x = 1,536.92

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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.