Home / 1,688.23-2,331.23-1,059.85

Finding the Fourth Proportional to 1,688.23, 2,331.23 and 1,059.85

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Solution

The fourth proportional to 1,688.23, 2,331.23 and 1,059.85 is: 1,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.23 : 2,331.23 = 1,059.85 : x
  2. Step 2: Convert to fraction form
    1,688.23/2,331.23 = 1,059.85/x
  3. Step 3: Cross multiply
    1,688.23x = 2,331.23 × 1,059.85
  4. Step 4: Simplify right side
    1,688.23x = 2,470,754.12
  5. Step 5: Solve for x
    x = 2,470,754.12/1,688.23
  6. Step 6: Final answer
    x = 1,463.52

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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.