Home / 5,285.46-7,928.23-1,587.72

Finding the Fourth Proportional to 5,285.46, 7,928.23 and 1,587.72

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Solution

The fourth proportional to 5,285.46, 7,928.23 and 1,587.72 is: 2,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.46 : 7,928.23 = 1,587.72 : x
  2. Step 2: Convert to fraction form
    5,285.46/7,928.23 = 1,587.72/x
  3. Step 3: Cross multiply
    5,285.46x = 7,928.23 × 1,587.72
  4. Step 4: Simplify right side
    5,285.46x = 12,587,809.34
  5. Step 5: Solve for x
    x = 12,587,809.34/5,285.46
  6. Step 6: Final answer
    x = 2,381.59

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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.