Home / 1,688.06-2,331.79-1,530.87

Finding the Fourth Proportional to 1,688.06, 2,331.79 and 1,530.87

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Solution

The fourth proportional to 1,688.06, 2,331.79 and 1,530.87 is: 2,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.06 : 2,331.79 = 1,530.87 : x
  2. Step 2: Convert to fraction form
    1,688.06/2,331.79 = 1,530.87/x
  3. Step 3: Cross multiply
    1,688.06x = 2,331.79 × 1,530.87
  4. Step 4: Simplify right side
    1,688.06x = 3,569,654.79
  5. Step 5: Solve for x
    x = 3,569,654.79/1,688.06
  6. Step 6: Final answer
    x = 2,114.65

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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.