Home / 1,921.64-2,645.34-1,725.08

Finding the Fourth Proportional to 1,921.64, 2,645.34 and 1,725.08

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Solution

The fourth proportional to 1,921.64, 2,645.34 and 1,725.08 is: 2,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.64 : 2,645.34 = 1,725.08 : x
  2. Step 2: Convert to fraction form
    1,921.64/2,645.34 = 1,725.08/x
  3. Step 3: Cross multiply
    1,921.64x = 2,645.34 × 1,725.08
  4. Step 4: Simplify right side
    1,921.64x = 4,563,423.13
  5. Step 5: Solve for x
    x = 4,563,423.13/1,921.64
  6. Step 6: Final answer
    x = 2,374.75

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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.