Home / 2,921.55-4,382.31-1,688.16

Finding the Fourth Proportional to 2,921.55, 4,382.31 and 1,688.16

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Solution

The fourth proportional to 2,921.55, 4,382.31 and 1,688.16 is: 2,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.55 : 4,382.31 = 1,688.16 : x
  2. Step 2: Convert to fraction form
    2,921.55/4,382.31 = 1,688.16/x
  3. Step 3: Cross multiply
    2,921.55x = 4,382.31 × 1,688.16
  4. Step 4: Simplify right side
    2,921.55x = 7,398,040.45
  5. Step 5: Solve for x
    x = 7,398,040.45/2,921.55
  6. Step 6: Final answer
    x = 2,532.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.