Home / 1,186.18-1,637.16-688.84

Finding the Fourth Proportional to 1,186.18, 1,637.16 and 688.84

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Solution

The fourth proportional to 1,186.18, 1,637.16 and 688.84 is: 950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.18 : 1,637.16 = 688.84 : x
  2. Step 2: Convert to fraction form
    1,186.18/1,637.16 = 688.84/x
  3. Step 3: Cross multiply
    1,186.18x = 1,637.16 × 688.84
  4. Step 4: Simplify right side
    1,186.18x = 1,127,741.29
  5. Step 5: Solve for x
    x = 1,127,741.29/1,186.18
  6. Step 6: Final answer
    x = 950.73

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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.