Home / 5,120.60-7,681.02-1,833.92

Finding the Fourth Proportional to 5,120.60, 7,681.02 and 1,833.92

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Solution

The fourth proportional to 5,120.60, 7,681.02 and 1,833.92 is: 2,750.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.60 : 7,681.02 = 1,833.92 : x
  2. Step 2: Convert to fraction form
    5,120.60/7,681.02 = 1,833.92/x
  3. Step 3: Cross multiply
    5,120.60x = 7,681.02 × 1,833.92
  4. Step 4: Simplify right side
    5,120.60x = 14,086,376.20
  5. Step 5: Solve for x
    x = 14,086,376.20/5,120.60
  6. Step 6: Final answer
    x = 2,750.92

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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.