Home / 1,261.04-1,740.12-789.14

Finding the Fourth Proportional to 1,261.04, 1,740.12 and 789.14

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Solution

The fourth proportional to 1,261.04, 1,740.12 and 789.14 is: 1,088.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.04 : 1,740.12 = 789.14 : x
  2. Step 2: Convert to fraction form
    1,261.04/1,740.12 = 789.14/x
  3. Step 3: Cross multiply
    1,261.04x = 1,740.12 × 789.14
  4. Step 4: Simplify right side
    1,261.04x = 1,373,189.60
  5. Step 5: Solve for x
    x = 1,373,189.60/1,261.04
  6. Step 6: Final answer
    x = 1,088.94

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1.5x scale

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.