Home / 5,428.74-8,143.56-1,533.18

Finding the Fourth Proportional to 5,428.74, 8,143.56 and 1,533.18

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Solution

The fourth proportional to 5,428.74, 8,143.56 and 1,533.18 is: 2,299.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.74 : 8,143.56 = 1,533.18 : x
  2. Step 2: Convert to fraction form
    5,428.74/8,143.56 = 1,533.18/x
  3. Step 3: Cross multiply
    5,428.74x = 8,143.56 × 1,533.18
  4. Step 4: Simplify right side
    5,428.74x = 12,485,543.32
  5. Step 5: Solve for x
    x = 12,485,543.32/5,428.74
  6. Step 6: Final answer
    x = 2,299.90

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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.