Home / 1,557.29-2,148.18-996.64

Finding the Fourth Proportional to 1,557.29, 2,148.18 and 996.64

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Solution

The fourth proportional to 1,557.29, 2,148.18 and 996.64 is: 1,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.29 : 2,148.18 = 996.64 : x
  2. Step 2: Convert to fraction form
    1,557.29/2,148.18 = 996.64/x
  3. Step 3: Cross multiply
    1,557.29x = 2,148.18 × 996.64
  4. Step 4: Simplify right side
    1,557.29x = 2,140,962.12
  5. Step 5: Solve for x
    x = 2,140,962.12/1,557.29
  6. Step 6: Final answer
    x = 1,374.80

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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.