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Finding the Fourth Proportional to 1,807.01, 2,495.45 and 1,543.49

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Solution

The fourth proportional to 1,807.01, 2,495.45 and 1,543.49 is: 2,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.01 : 2,495.45 = 1,543.49 : x
  2. Step 2: Convert to fraction form
    1,807.01/2,495.45 = 1,543.49/x
  3. Step 3: Cross multiply
    1,807.01x = 2,495.45 × 1,543.49
  4. Step 4: Simplify right side
    1,807.01x = 3,851,694.40
  5. Step 5: Solve for x
    x = 3,851,694.40/1,807.01
  6. Step 6: Final answer
    x = 2,131.53

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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.