Home / 1,186.30-1,777.70-1,056.55

Finding the Fourth Proportional to 1,186.30, 1,777.70 and 1,056.55

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Solution

The fourth proportional to 1,186.30, 1,777.70 and 1,056.55 is: 1,583.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.30 : 1,777.70 = 1,056.55 : x
  2. Step 2: Convert to fraction form
    1,186.30/1,777.70 = 1,056.55/x
  3. Step 3: Cross multiply
    1,186.30x = 1,777.70 × 1,056.55
  4. Step 4: Simplify right side
    1,186.30x = 1,878,228.94
  5. Step 5: Solve for x
    x = 1,878,228.94/1,186.30
  6. Step 6: Final answer
    x = 1,583.27

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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.