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Finding the Fourth Proportional to 1,807.71, 2,714.51 and 1,118.77

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Solution

The fourth proportional to 1,807.71, 2,714.51 and 1,118.77 is: 1,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.71 : 2,714.51 = 1,118.77 : x
  2. Step 2: Convert to fraction form
    1,807.71/2,714.51 = 1,118.77/x
  3. Step 3: Cross multiply
    1,807.71x = 2,714.51 × 1,118.77
  4. Step 4: Simplify right side
    1,807.71x = 3,036,908.36
  5. Step 5: Solve for x
    x = 3,036,908.36/1,807.71
  6. Step 6: Final answer
    x = 1,679.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.