Home / 1,435.34-2,151.25-777.58

Finding the Fourth Proportional to 1,435.34, 2,151.25 and 777.58

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Solution

The fourth proportional to 1,435.34, 2,151.25 and 777.58 is: 1,165.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.34 : 2,151.25 = 777.58 : x
  2. Step 2: Convert to fraction form
    1,435.34/2,151.25 = 777.58/x
  3. Step 3: Cross multiply
    1,435.34x = 2,151.25 × 777.58
  4. Step 4: Simplify right side
    1,435.34x = 1,672,761.65
  5. Step 5: Solve for x
    x = 1,672,761.65/1,435.34
  6. Step 6: Final answer
    x = 1,165.41

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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.