Home / 1,688.13-2,329.34-942.06

Finding the Fourth Proportional to 1,688.13, 2,329.34 and 942.06

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Solution

The fourth proportional to 1,688.13, 2,329.34 and 942.06 is: 1,299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.13 : 2,329.34 = 942.06 : x
  2. Step 2: Convert to fraction form
    1,688.13/2,329.34 = 942.06/x
  3. Step 3: Cross multiply
    1,688.13x = 2,329.34 × 942.06
  4. Step 4: Simplify right side
    1,688.13x = 2,194,373.33
  5. Step 5: Solve for x
    x = 2,194,373.33/1,688.13
  6. Step 6: Final answer
    x = 1,299.88

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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.