Home / 1,921.84-2,656.72-1,725

Finding the Fourth Proportional to 1,921.84, 2,656.72 and 1,725

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Solution

The fourth proportional to 1,921.84, 2,656.72 and 1,725 is: 2,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.84 : 2,656.72 = 1,725 : x
  2. Step 2: Convert to fraction form
    1,921.84/2,656.72 = 1,725/x
  3. Step 3: Cross multiply
    1,921.84x = 2,656.72 × 1,725
  4. Step 4: Simplify right side
    1,921.84x = 4,582,842
  5. Step 5: Solve for x
    x = 4,582,842/1,921.84
  6. Step 6: Final answer
    x = 2,384.61

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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.