Home / 5,120.28-7,681.56-1,835.76

Finding the Fourth Proportional to 5,120.28, 7,681.56 and 1,835.76

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Solution

The fourth proportional to 5,120.28, 7,681.56 and 1,835.76 is: 2,754.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.28 : 7,681.56 = 1,835.76 : x
  2. Step 2: Convert to fraction form
    5,120.28/7,681.56 = 1,835.76/x
  3. Step 3: Cross multiply
    5,120.28x = 7,681.56 × 1,835.76
  4. Step 4: Simplify right side
    5,120.28x = 14,101,500.59
  5. Step 5: Solve for x
    x = 14,101,500.59/5,120.28
  6. Step 6: Final answer
    x = 2,754.05

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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.