Home / 1,899.46-2,621.46-1,113.40

Finding the Fourth Proportional to 1,899.46, 2,621.46 and 1,113.40

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Solution

The fourth proportional to 1,899.46, 2,621.46 and 1,113.40 is: 1,536.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.46 : 2,621.46 = 1,113.40 : x
  2. Step 2: Convert to fraction form
    1,899.46/2,621.46 = 1,113.40/x
  3. Step 3: Cross multiply
    1,899.46x = 2,621.46 × 1,113.40
  4. Step 4: Simplify right side
    1,899.46x = 2,918,733.56
  5. Step 5: Solve for x
    x = 2,918,733.56/1,899.46
  6. Step 6: Final answer
    x = 1,536.61

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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.