Home / 1,555.36-2,331.78-581.32

Finding the Fourth Proportional to 1,555.36, 2,331.78 and 581.32

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Solution

The fourth proportional to 1,555.36, 2,331.78 and 581.32 is: 871.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.36 : 2,331.78 = 581.32 : x
  2. Step 2: Convert to fraction form
    1,555.36/2,331.78 = 581.32/x
  3. Step 3: Cross multiply
    1,555.36x = 2,331.78 × 581.32
  4. Step 4: Simplify right side
    1,555.36x = 1,355,510.35
  5. Step 5: Solve for x
    x = 1,355,510.35/1,555.36
  6. Step 6: Final answer
    x = 871.51

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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.