Home / 1,688.34-2,328.18-1,314.66

Finding the Fourth Proportional to 1,688.34, 2,328.18 and 1,314.66

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Solution

The fourth proportional to 1,688.34, 2,328.18 and 1,314.66 is: 1,812.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.34 : 2,328.18 = 1,314.66 : x
  2. Step 2: Convert to fraction form
    1,688.34/2,328.18 = 1,314.66/x
  3. Step 3: Cross multiply
    1,688.34x = 2,328.18 × 1,314.66
  4. Step 4: Simplify right side
    1,688.34x = 3,060,765.12
  5. Step 5: Solve for x
    x = 3,060,765.12/1,688.34
  6. Step 6: Final answer
    x = 1,812.88

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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.