Home / 5,285.31-7,928.88-1,775.66

Finding the Fourth Proportional to 5,285.31, 7,928.88 and 1,775.66

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Solution

The fourth proportional to 5,285.31, 7,928.88 and 1,775.66 is: 2,663.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.31 : 7,928.88 = 1,775.66 : x
  2. Step 2: Convert to fraction form
    5,285.31/7,928.88 = 1,775.66/x
  3. Step 3: Cross multiply
    5,285.31x = 7,928.88 × 1,775.66
  4. Step 4: Simplify right side
    5,285.31x = 14,078,955.42
  5. Step 5: Solve for x
    x = 14,078,955.42/5,285.31
  6. Step 6: Final answer
    x = 2,663.79

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1.5x scale

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.