Home / 5,128.52-7,688.16-1,840.84

Finding the Fourth Proportional to 5,128.52, 7,688.16 and 1,840.84

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Solution

The fourth proportional to 5,128.52, 7,688.16 and 1,840.84 is: 2,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.52 : 7,688.16 = 1,840.84 : x
  2. Step 2: Convert to fraction form
    5,128.52/7,688.16 = 1,840.84/x
  3. Step 3: Cross multiply
    5,128.52x = 7,688.16 × 1,840.84
  4. Step 4: Simplify right side
    5,128.52x = 14,152,672.45
  5. Step 5: Solve for x
    x = 14,152,672.45/5,128.52
  6. Step 6: Final answer
    x = 2,759.60

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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.