Home / 1,261.37-1,890.99-602.87

Finding the Fourth Proportional to 1,261.37, 1,890.99 and 602.87

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Solution

The fourth proportional to 1,261.37, 1,890.99 and 602.87 is: 903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.37 : 1,890.99 = 602.87 : x
  2. Step 2: Convert to fraction form
    1,261.37/1,890.99 = 602.87/x
  3. Step 3: Cross multiply
    1,261.37x = 1,890.99 × 602.87
  4. Step 4: Simplify right side
    1,261.37x = 1,140,018.13
  5. Step 5: Solve for x
    x = 1,140,018.13/1,261.37
  6. Step 6: Final answer
    x = 903.80

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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.