Home / 2,359.90-3,537.51-1,320.78

Finding the Fourth Proportional to 2,359.90, 3,537.51 and 1,320.78

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Solution

The fourth proportional to 2,359.90, 3,537.51 and 1,320.78 is: 1,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.90 : 3,537.51 = 1,320.78 : x
  2. Step 2: Convert to fraction form
    2,359.90/3,537.51 = 1,320.78/x
  3. Step 3: Cross multiply
    2,359.90x = 3,537.51 × 1,320.78
  4. Step 4: Simplify right side
    2,359.90x = 4,672,254.77
  5. Step 5: Solve for x
    x = 4,672,254.77/2,359.90
  6. Step 6: Final answer
    x = 1,979.86

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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.