Home / 1,900.11-2,621.30-1,113.83

Finding the Fourth Proportional to 1,900.11, 2,621.30 and 1,113.83

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Solution

The fourth proportional to 1,900.11, 2,621.30 and 1,113.83 is: 1,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.11 : 2,621.30 = 1,113.83 : x
  2. Step 2: Convert to fraction form
    1,900.11/2,621.30 = 1,113.83/x
  3. Step 3: Cross multiply
    1,900.11x = 2,621.30 × 1,113.83
  4. Step 4: Simplify right side
    1,900.11x = 2,919,663.90
  5. Step 5: Solve for x
    x = 2,919,663.90/1,900.11
  6. Step 6: Final answer
    x = 1,536.58

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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.