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Finding the Fourth Proportional to 1,899.92, 2,621.04 and 1,113.50

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Solution

The fourth proportional to 1,899.92, 2,621.04 and 1,113.50 is: 1,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.92 : 2,621.04 = 1,113.50 : x
  2. Step 2: Convert to fraction form
    1,899.92/2,621.04 = 1,113.50/x
  3. Step 3: Cross multiply
    1,899.92x = 2,621.04 × 1,113.50
  4. Step 4: Simplify right side
    1,899.92x = 2,918,528.04
  5. Step 5: Solve for x
    x = 2,918,528.04/1,899.92
  6. Step 6: Final answer
    x = 1,536.13

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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.