Home / 1,914.79-2,639.97-1,560.31

Finding the Fourth Proportional to 1,914.79, 2,639.97 and 1,560.31

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Solution

The fourth proportional to 1,914.79, 2,639.97 and 1,560.31 is: 2,151.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.79 : 2,639.97 = 1,560.31 : x
  2. Step 2: Convert to fraction form
    1,914.79/2,639.97 = 1,560.31/x
  3. Step 3: Cross multiply
    1,914.79x = 2,639.97 × 1,560.31
  4. Step 4: Simplify right side
    1,914.79x = 4,119,175.45
  5. Step 5: Solve for x
    x = 4,119,175.45/1,914.79
  6. Step 6: Final answer
    x = 2,151.24

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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.