Home / 1,851.18-2,772.48-1,687.14

Finding the Fourth Proportional to 1,851.18, 2,772.48 and 1,687.14

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Solution

The fourth proportional to 1,851.18, 2,772.48 and 1,687.14 is: 2,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.18 : 2,772.48 = 1,687.14 : x
  2. Step 2: Convert to fraction form
    1,851.18/2,772.48 = 1,687.14/x
  3. Step 3: Cross multiply
    1,851.18x = 2,772.48 × 1,687.14
  4. Step 4: Simplify right side
    1,851.18x = 4,677,561.91
  5. Step 5: Solve for x
    x = 4,677,561.91/1,851.18
  6. Step 6: Final answer
    x = 2,526.80

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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.