Home / 5,811.04-8,716.56-1,428.58

Finding the Fourth Proportional to 5,811.04, 8,716.56 and 1,428.58

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Solution

The fourth proportional to 5,811.04, 8,716.56 and 1,428.58 is: 2,142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.04 : 8,716.56 = 1,428.58 : x
  2. Step 2: Convert to fraction form
    5,811.04/8,716.56 = 1,428.58/x
  3. Step 3: Cross multiply
    5,811.04x = 8,716.56 × 1,428.58
  4. Step 4: Simplify right side
    5,811.04x = 12,452,303.28
  5. Step 5: Solve for x
    x = 12,452,303.28/5,811.04
  6. Step 6: Final answer
    x = 2,142.87

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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.