Home / 1,261.37-1,740.57-929.98

Finding the Fourth Proportional to 1,261.37, 1,740.57 and 929.98

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Solution

The fourth proportional to 1,261.37, 1,740.57 and 929.98 is: 1,283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.37 : 1,740.57 = 929.98 : x
  2. Step 2: Convert to fraction form
    1,261.37/1,740.57 = 929.98/x
  3. Step 3: Cross multiply
    1,261.37x = 1,740.57 × 929.98
  4. Step 4: Simplify right side
    1,261.37x = 1,618,686.59
  5. Step 5: Solve for x
    x = 1,618,686.59/1,261.37
  6. Step 6: Final answer
    x = 1,283.28

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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.