Home / 1,557.76-2,149.65-849.58

Finding the Fourth Proportional to 1,557.76, 2,149.65 and 849.58

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Solution

The fourth proportional to 1,557.76, 2,149.65 and 849.58 is: 1,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.76 : 2,149.65 = 849.58 : x
  2. Step 2: Convert to fraction form
    1,557.76/2,149.65 = 849.58/x
  3. Step 3: Cross multiply
    1,557.76x = 2,149.65 × 849.58
  4. Step 4: Simplify right side
    1,557.76x = 1,826,299.65
  5. Step 5: Solve for x
    x = 1,826,299.65/1,557.76
  6. Step 6: Final answer
    x = 1,172.39

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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.