Home / 1,285.56-1,927.86-555.08

Finding the Fourth Proportional to 1,285.56, 1,927.86 and 555.08

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Solution

The fourth proportional to 1,285.56, 1,927.86 and 555.08 is: 832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.56 : 1,927.86 = 555.08 : x
  2. Step 2: Convert to fraction form
    1,285.56/1,927.86 = 555.08/x
  3. Step 3: Cross multiply
    1,285.56x = 1,927.86 × 555.08
  4. Step 4: Simplify right side
    1,285.56x = 1,070,116.53
  5. Step 5: Solve for x
    x = 1,070,116.53/1,285.56
  6. Step 6: Final answer
    x = 832.41

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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.